Dear Galyo;
Congratulations on your appointments and hope all goes well.
As to announcing your coming out, why not wait a little while if you can before you do it? I do understand the feelings of urgency you have but why not wait until after your psychiatric visit? This way you may have an opinion from someone else and have time to better prepare yourself.
I came out to my family in person. I just felt that was a more personal way but then again everyone has their own way. If you decide to send an email, it can appear to be cold and uncaring because they are just words on a screen with no voice inflection or tone unlike the spoken word. Should you decide to do it in person, raising your voice won't help neither will swearing. Take into consideration that this will be a major shock and have great impact on the recipients. It can be harder depending on the mindset of the recipients toward anyone from the LGBT community.
I began by telling my family that I had a personal situation that was serious and was causing me great stress and mental anguish. I let them know that if I could resolve it any other way I would have but cannot delay any longer. I also asked them to refrain from interrupting me as what I was going to say was extremely difficult and to bear with me. If they had any questions, I'd answer them as best I could after. It was then I dropped the bomb shell.
I had brought with me an information packet for each of them that explained what being transgender meant, why I was the way I was, various options for me, how to be a supporting ally and hoped they would read it over at their leisure. I was surprised at the reaction I received with the family saying they were supportive and the like which was the complete opposite of what I had expected. I only found out much later through a third party I had been right in my initial assessment. The great thing is I know their true feelings but they don't know that I know so I can push things a little.
In the end though, it ultimately will be your decision how and when to come out and there is no right or wrong way to make the announcement. You know your family much better than I ever will and armed with that, you'll make the choice that is right for you.
I wish you much luck and happiness.
Love,
Clare
Coming out, in my opinion, is probably the hardest and most stressful thing you'll do on your journey.