Am I overthinking?

I’m ridiculously self conscious about literally every aspect of my body especially my vagina, and I’m really worried that my girlfriend (trans mtf kinda important here) of 3 years is going to leave me because we still haven’t had sex yet. She really wants to but I’m so insecure about it I always say no and I’m worried that she will leave because she’s bored of me because we haven’t progressed further in our relationship and I don’t feel like I can talk about my insecurities because it pales in comparison to her situation and I feel pretty invalid knowing that I’m in a shitty mental state about something like how my vagina looks when she is dealing with a lot worse