I'm sorry you're struggling. Of course you can do whatever you need to in order to feel better. But are you placing too much meaning on your breasts and what it will be like to get rid of them? Maybe start with taking the focus off the question 'am i lesbian or trans'. The answer to the question doesn't need to be found right now; the answer will still be there to be found later. It's not urgent.

Instead, it might be worth doing some digging. What do you like about the idea of going to the beach topless? What would you feel? How would people react? What would it mean for you? For me I hated my hips. I felt they meant domesticity and childbearing, and I wanted to be an adventurer instead.

Do you do any sports or activities where the focus is on what your body DOES rather than what it looks like or symbolises or how it makes you feel? I ask because taking up strength sports actually significantly relieved my body dysmorphia, and other women have said so too (usually in relation to weight, but this is not unconnected to our sex and gender)