My fertile day started July 29th I had unprotected sex that day and that's it August 15 or 17 I had spotting for like an hour or so then went away and that's it my period is suppose to be August 23rd is it a chance of pregnancy even though he said he didn't come inside of me and the crazy thing is while we were having sex he asked me if I was on BC I said no and he kept going don't judge me but don't know if he came inside of me or not plus I've been constipated and I'm always regular. I went to the doctor today because of abdominal issues they did a pregnancy test and it came back negative should I wait until AF on August 23rd??