So my body & hormones have been weird lately. My period isn't always totally regular and I can't remember if I got it last month, if I did it was not as heavy & painful as usual. I got it this month & i bled very heavily but it only lasted 4 days, (mine usually goes on for 7). at the end of it my husband & I weren't very careful during sex, I'm between birth controls, so I took a plan b pill, That was Monday. I've head headaches & felt extremely tired ever since then. Today I started bleeding again but it is heavier than spotting, and odd discharge. I just had a big clot, pinkish, yellowish that was about an inch long. I haven't had anything like that before & im experiencing cramps & pain in my pelvic area. I was wondering if this could be a miscarriage & I just didn't know that I was pregnant. Can anyone help?