OK, now I've calmed down enough to elaborate a bit.
I think I had such a peak in anxiety because tomorrow is my Big Day and I'll ask to be referred to the trans clinic. Another was finding out I'm heavier than I thought and getting obsessed with the numbers. I found out the guidelines for getting testosterone and mastectomy, and the weight limits for mastectomy especially are theoretically super tight (the idea being that unless the body is already low in bbody fat, the end result is not necessarily aesthetically pleasing, which in one hand I understand but it also ounds a lot like "fuck you if you are ugly"). In practicality, testo comes first and helps in losing weight; and it's going to be a year or more before I even get to the testosterone stage in the treatments, so I have PLENTY of time to make small adjustments for lasting effects.
So, basically, I had a huge crying fit and called a helpline and they reminded me that the process is so slow that I can get my weight in control before the testosterone starts, and for most trans men weight loss becomes considerably easier after testosterone changes the base metabolism, helps build muscle, and so on and so forth. I was also bellyaching about loose skin (which to be honest is probably not a problem I will be having, but I was in full catastrophe mode) and the helpline person said that I shouldn't obsess about that theoretical possibility and even if I'm left with a belly pouch, that can also be operated on if it's actually _bad_. (Now I'm veering into dark humor, but being poor, at least I know how I'm going to spend my inheritance once my parents eventually croak it: paying off my student loans and getting surgery.)