So the last two days (Monday night, til 3am this morning. 8.10.16) I've had this bad "cramp" in my right pelvic area and it would shoot down my leg. At first it was like gas but then it got so bad that I got maybe 3 hours of sleep. Well this morning I woke up to my underwear with blood on it....and all day the blood has been light and a few clots here and there. (Maybe 2-3)

Could I have started my period or could it be implantation?

P.s. I've never had cramps like this before, EVER