Do you ever stay in contact with them outside of meeting up in person?
Also, i'd like to add that I barely understood anything you said about your job lol, the only part I understood was you being in the shadows, starting hormones, and not knowing how to tell your boss or your co-workers.
My only advice would be to just tell them... I mean if you already started hormones they're going to find out eventually. Are you a good employee? Because sometimes your work ethic trumps most other things. As for how to tell someone, just be honest and informative. It might also help to do a search of the laws in your area because (to my understanding) some states actually have anti-discriminatory employment laws that protect you from, say, getting fired as a result of coming out, but that depends on where you live.