I am on birth control pills from Aug 1st 2018. I took all the active pills as directed and got my withdrawal bleed on 26th August. The withdrawal bleed was unexpectedly heavy and i had cramps. I have never had this while taking the pills. During the time I was taking my active pills, I had sex on 15th,16th,17th and 21st of August using the withdrawal method for extra precautions. Now I'm taking the second pack of pills but I'm having bad cramps on just the right side of my lower tummy. Could I be pregnant? I've taken 2 tests and they are negative. I'm really so stressed and cannot stop searching over the net. Please help!