This is a little odd? Please help :(

Sorry if this is tmi but this is the first time I've had issues with my period? I am 22 cigarette and cannabis user (oh and Lexapro) I also have a copper iud. I've had that for over a year and a half, last month I spotted heavily for about 4 days 15 days after my period. Then my next period was exactly 1 week late? That period was the worst one I can remember, I spent day 1 and 2 constantly leaking through and then it normalized. But today (exactly one week later) my vagina has been in a lot of pain, as if I've had a front wedgie all day (which I haven't) and just now when I went to the bath room and when I wiped (it did not burn or hurt to pee) there was blood on the tissue. It wasn't spotty it was heavy and looked like Heinz Ketchup? Like, it was thick and kinda had an orangy color to it? Sorry if this is tmi but it really worries me...