If your worried about what people will think, then don't tell them! how bald are you? becos obviously the more hair you had previously the less likely people are going to notice.
Or don't say anything to anyone and if people ask just say you've started taking the meds and they are working well for you.
I know how you feel, i'm a NW5V/NW6 and i'm havin my ht in Oct, i'm still as yet undecided how i'm gonna approach the post op months.....its prob gonna involve a few lies i know that