I am on the pill but after a lighter period (light in volume but same number of days) and for some reason decided to take pregnancy tests...four to be exact. The last one I used would have been a week after my period started. They were negative. They can't be wrong right??

I used First Response and have heard they have been the most accurate but am tempted by the dollar store ones?? I don't want to take another but I need to stop worrying about this...please help! And it may sound like I shouldn't be having sex at all but I over-think and worry about everything...lol I'm so OCD!

It doesn't sound like you're pregnant. The pill will make your period lighter anyway so it sounds like you have nothing to worry about.
If you really are OCD, nothing will help you get peace of mind other then going to the doctor.

Home pregnancy tests are more sensitive now and can detect a pregnancy earlier. I would say you're safe but if you still want confirmation then have a serum pregnancy test done at your doctor's office.

It sounds like you've had a real, menstrual period which means that you are absolutely not pregnant.

Some women who experience false negatives with pregnancy tests tend to do so with nearly every test they take in early pregnancy. To be certain you could go to a doctor and have a blood test taken, but I do not think this is necessary.

Don't worry about things that shouldn't be worried about! You're fine, be happy!

You are definitly not pregnant if you are having a period. Occasionally women experience spotting during pregnancy but nothing close to a period. Save your money. There is no need to keep buying the tests. Best of luck!