I recently had a weird period. I was about 5 days late and My so called period lasted for about 1 -1 1/2 days. I was pretty much just one big blood clot. Now it's been about 2 weeks and I've had a bad upset stomach and vomited a couple of times for 4 days straight. Could I be Pregnant? I'm trying to figure out if I really had a period or if it's something else.

Go see a doctor. That is the only way to be certain. Even if you are not pregnant, this does sound normal to me. Get it checked out.

Are u on any birth control pills? This sounds like u missed a pill or two. If not I think u could be I would take a test. If it comes out negative. U can wait a week and take another one or go to the dr. and get blood test if u are in a hurry to find out. Other wise it is cheaper to wait unless u are getting worse then I would say there might be something worse wrong.

Like the previous posters suggested, the only way to know for sure is a pregnancy test. If you are taking a home pregnancy test, make sure to test with first morning urine. A blood test at the doctors office is more accurate. Good luck.