5 periods in two months

[Raypcb]

I had my period normal even getting off birth control and I had a cryo and biopies done on my cervix 3 months ago. But for June I started my period the 29- to July 5 then again July 11- 18 then again faintly for July 24-26 and again August 1st till the 11th. I was watching tv today and I felt a gushing sensation to run to the bathroom covered in blood. I'm spotting and having really bad cramps. Me and my fiance are trying to have a baby but this is abnormal. Am I pregnant? I took a pregnancy test 3 days ago and it was a faint positive but I'm spotting bright red.

[Clysta]

More than likely if you're bleeding that heavily it's cause slight anemia in your body, which would cause you to feel light headed and/or dizzy. The only reason I can imagine they would want to find out your blood type is for a blood transfusion and/or to see if you're RH positive or negative. If you're RH negative, you'll likely be given a shot to prevent your body from making antibodies--it would be a precautionary sort of thing for if you had been pregnant.  

[Raypcb]

I am going to the doctors today, but now I am worried, they are ordering test to find out my blood type. I took another test and it says negative. But I'm light headed and bleeding profusely. I told them what is going on, should I just go to the er?

[Clysta]

If you had a positive (a true positive) it's possible you could be having a chemical pregnancy. This is basically just a very early miscarriage. Retest in a few days and see what it shows, or you can see your doctor for blood work.