Period lasting a month

So I started my period on 1/16/20 and it’s never fully stopped since then

Everyday when I wipe I have blood some days its heavier so that I need to wear a pad because it would ruin my underwear

Idk what’s the cause I have an appointment this Tuesday the 18th

I haven’t gained or lost weight. This is the least stressed I’ve been in a while. The color is brown sometimes it’s really sticky and looks like blood clots. I get cramps randomly but not daily

I’ve been taking iron pills but nothing has helped. I’m getting like daily headaches now which is very unusual for me.

Any ideas what could be going on?