So this might sound odd but, mine was actually not so bad pre transition. It actually GOT WORSE once I started, but that was because for me, I started transitioning as soon as I found out what GD and being trans was. Before, the feeling would come and go but since I have heavy anxiety and depression, I thought it was that.
For instance, during sex pre-transition, if someone touched my chest area (although it turned me on :p ) id feel a wave of that feeling ... I'd go on and ignore it because I just said to myself "it must be the feelings of loneliness and insecurity. The person touching me right now WANTS to have sex with me, so it's OK. " then I'd try and distract myself. And then after sex I needed to be held tight...REALLY tight (so it squishes me against them to feel like my breasts don't really exist) to make it go away in the end. I thought this was some kind of "endorphins released so I need to be held to feel loved" thing. And other instances.
Another example is I'd have to be bear hugged (like above) when I'd get out the shower. I thought it was because of my fear of showers...but only that helped, not calming down or leaving the area or anything. I didn't understand completely, so I pushed it back as much as possible. Turns out it was because of having to see my body that gave me such grief.
Then I found out about transgender people and transitioning, and everything clicked. I got on starting therapy and HRT within that year. After 5 years it's gotten better, but at first, between finally understanding what's been bothering me since I was 6, and the HRT mood changes, it was hard. First binding helped, but sometimes it would make me more aware of the (not so)fun bags on my chest. Especially in the cold. Ugh. Then after i shaved my hair, when it grew back quick, I kept noticing that. And this and that, suddenly instead of pushing it to the back of my mind I couldn't stop noticing all the little things that screamed DUDE...YOU WERE DFAB ... YOURE NOT THE DUDE YOU WANNA BE AND YOU WILL NEVER BE HAPPY.
But with time, therapy and hormones (and top surgery possibly on the horizon) for the first time in a while I had hope. So instead of being bombarded, it only popped up badly 60% of the times I had sex and like 50% percent of the time in the shower. And not so much during normal days. When it would randomly pop up (not talking about the above triggers), I'd take a deep breath, calm myself, and remind myself over and over that this is ONLY TEMPORARY. That one day I'll be the man I should have been born as. And the hope is enough to push me through. Therapy helps too. I got lucky my mom was supportive..my girlfriend is too, but she wasn't at first. We broke up and even though she was my friend, it took a year for us to really get through it and for her to stop saying stupid things like "you're angry? Oh is it the T getting to you?"and other mean things.
You might not have a special someone to back you up and scared about your family but..take it from someone who's attempted suicide because they thought they might be reincarnated in their right body next time....don't wait. Live for yourself. You have to make yourself happy, you weren't created to please other people. You were born to love and care for YOU.
You say yourself , it's been over 30 years. I started at 19, I can't imagine going through an extra 11 years of not being myself. You owe yourself that. You ARE NOT selfish. OR a monster. I understand.
Take a minute and picture your ideal future. Like really, think hard, in it, are you transitioned or not ? Think of what would truly make you beyond happy, what you'd wish for yourself if you had a wish (and had to use it on yourself).
If the answer is you're transitioning/transitioned, then you know what you truly want and what you need to do. See a gender therapist. Speak to professionals. Do more research.
This next part is. CRUCIAL. Take a small trip somewhere where you won't be recognized. Or even spend time in a different part of town. Dressed as a woman. Make up, dresses, and all. Walk around, get lunch, hang at a book store. Even if you don't pass, just see how it feels to live as a woman completely. Do this for a while. Therapists recommend at least a year of this, but months are fine. If it just solidifies your feelings, then you know the answer. Look into HRT and make things happen.
Come out at your own pace. It's not a rush. You need to understand, if they cant love you unconditionally enough to support your decision, then it's better. Better than living your life lying to appease them. If you're just waiting til they keel over to do it so you don't lose them, then you already know you want to,
Taking the first step sometimes is the scariest part. But that's what this community is for. And the therapists. You'll make new friends, find lovers and people who accept you as you. If not, then screw em. They don't care about your feelings, because this is a serious life changing thing that shows who your true friends are.
You might also need to see someone in general because it sounds like you have depression too, so you can start like that. Just remember, YOU DESERVE THIS. YOU DESERVE HAPPINESS.
My dad is transphobic and homophobic but he is learning to deal with me. Both my parents misgender me a lot (19 years of calling someone by one name is a hard thing to change though) but they try. They've learned how badly this affects me and how much I need this. Hopefully yours see that too. If not, then they might eventually. Worse comes to worse, you will make your own family of people who love and support you with friends, lovers and others.
(This is all assuming you don't live with them, if you do, it might be harder. They can kick you out.)
Just find your happiness, follow your bliss, and don't let anyone get in the way or make you feel bad about doing what's important and necessary.
Best of luck ,
Adam
P.S. I just wanted to add, sometimes, especially at first, I'd get really suicidal. I thought I was better off dead (damn depression and mood swings). The one thing that stopped me when it got bad was that I didn't want to die before I got to be the man I am inside. When I realized that thought, it helped me stay afloat, thinking that I should at least get to die in the body I want, just in case I need it sometime after >_> . But it also made me realize how crucial it is to transition and keep going no matter what.