I need answers please...

Thru out these last few weeks I've had some pretty strange things going on with my body...I ovulated end of last month, at 7&8 dpo I took a hpt and it was positive but very very faint.for this reason, I took several more.of different brands.they also were a faint positive.wishing and hoping for darker lines, I took one daily but began noticing the test turned negative.with that being said, 2 days later I get serious abdominal pain to the point of I couldn't see.and although I tooked 2 aleeve pain pills it still was hurting.I thought that I was simply spotting during these 2 days until this morning when my spotting became a ball of blood and just fell out! So my question is, has anyone out there had a similar experience to mines? What would you do if this happened to you?? I'm worry and scared!