Im FTM pre-op and really dont know how to deal wit the weather getting warmer and especially going swimming since you cant really layer anymore witout overheating and being seen as biologically female

Do you have a binder?  If not, I'd recommend trying to get one if you have the cash for it, as it should allow you to remove some of the layers and still not have your chest be super obvious.  As far as swimming goes, I generally just wear board shorts and a rash guard or non-cotton shirt, with a binder underneath, and it works just fine.

Thanks Liam!