How to get over this fear?

Ever since I (16m) started testosterone, I started to become nauseous at the idea that my organs are just sitting and waiting for my levels to drop to start producing estrogen again. I’m now on month 2 in total and although Im not able to get any blood tests, my levels seem to be at least decent? Good pace of changes(?) and bleeding is noticeably lighter though will hopefully stop completely by month 3. Despite this, I still have this paranoia about it in the back of my head and I’m not sure how to help reassure myself. My earliest chances of getting these organs removed is when I’m 18-19 if I’m being optimistic, so if I don’t want to drive myself crazy, I’m going to need to find a way to cope with having the poison factory still in me. Any advice is appreciated