Hey man, I totally know how you feel. I got into therapy for my gender issues and had a hard time explaining how I felt. Luckily, my therapist was able to call me out the first session. Worst case scenario? You have to wait to find a therapist that will listen. But, in my experience, any therapist worth their weight will actually try to help you. My first therapist was one at my university and even though she could not help me, she still listened which gave me the courage to find someone who would. Stay strong, man. If you want, let me know and I will give you the info to my therapist, or the site I found her on. She was awesome, and I have so much to thank her for.
It is hard to divulge something so personal. I held it in for 24 years. I know, it hurts. It really makes it hard when you force yourself a mold that isn't you. But, I chose to believe the best in people. Its hard, but it isn't impossible. What's the worst they can do?