The nurse practitioner I see to get my testosterone does a follow up two months after you start, then if everything is good, it's every six months. I went for my follow up a couple days ago, and just got the blood work results back.
It was the day before I do my shots, and my T level was 599. My estradiol level was a lot lower than the previous blood test.
In the last couple of weeks, I've started seeing more changes. I have PCOS, so I've had extra hair growth for years, but it's increased lately. My facial hair is filling in more. I've pretty much had a goatee and part of a mustache, but I'm starting to get more hairs along my cheeks and further up my jawline. I'm also getting more body hair. I've gone about a month and a half without shark week, and the last one was a lot shorter than usual. My voice is getting deeper, and even the nurse practitioner could tell. It's helping me pass more, but I still can't figure out why I pass sometimes and not other times, even in the same day. It's more changes than I was expecting this quickly, and yet my family hasn't noticed or commented on it thankfully.
I also got her to give me paper copies of my prescriptions because of the issue I had with the pharmacist last time, so I found out she wrote it for me to have syringes with 24 gauge needles for injecting and 18 gauge for drawing.
Sounds like everything is going well! Levels look good.
As far as the passing sometimes, it really is all down to personal perception and how people view you - if their experience has led them to believe that people who look, sound, and act like you are male, then they'll get it right.
I have been having the same passing issue too. Just started college and can hang out with the frat boys and be called male but another guy can come in and see female so its like wtf.