WHAT IS THIS :-(

V

So I started anti-androgen pills (12days ago) after 4 months delayed and when I got my 1st day period I immediately started my first ever anti-androgen pill I took it religiously same time everyday. The bleeding was normal for 1st and 2nd day, it was so red and bit heavy + cramps but on the 3rd day it turns into brown and it is light flow but still it has a hint of color red. then it change into dark brown spotting on 4-6th day and the turned into more like of brown discharge on 7th-11 day and now 12 day i got bit of browny blood ..

why is it like that, is it a side effect of pills or what :-( any thoughts please?

SORRY TMI!!