Vaginal pain

So I’ve been on birth control for a few months now and haven’t had my period by choice but I’ve been getting cramps and random sharp pains down there is that normal because I’m missing my periods and sometimes after sex I get the tiniest bit of brown discharge like a speck or two when I wipe and then is it just me wtf is he hitting in there that hurts but at the same time feels good lmao anyone else have that ???