Hi. I've had a series of unfortunate sexual interactions (unfortunate because I was not using a condom/birth control). We resorted to the pulling out method. The first occurrence was July 17th, however, I did begin my period August 3rd. I did not use a condom again twice since then (last time was August 14th). I have been having some cramping for the past few days and some slight lower backaches. However, I should be expecting my period within the next week and a half and it is not completely out of the norm for me to get cramps 1-2 weeks before my period. I'm a natural worrier and was wondering if it was possible that I could be pregnant, and if so, how long has it been? I got a blood test today from my doctor but of course am too nervous to wait. Just need a little perspective.... I'm quite scared.