hey thanks for your responses everyone! sorry for the late reply. I think I envisioned myself being flat as a slip of paper. I haven't seen many male chests but recently, I've been paying attention to men at the train station, around campus, etc and notice what I have been oblivious to.
As for the weight loss, every doctor I visit mentions the need for weight loss and "hitting the gym," stressing exercise and a change of diet. I believe I have indeed lost some weight since my surgery. Most of my body looks thin except for my stomach. I started college at 108 and at my heaviest was 140. In undergrad I ate terribly and hardly ever exercised. I'm entering my second year of grad school in the fall and am trying to exercise daily now. I've cut out soda and alcohol almost entirely. I'll have some maybe 1x/month. If you have any tips for filling my chest out in a positive way, please let me know. I haven't ever been to a gym but have been faithfully googling routines, many of which I do not know if are actually effective lol.