Period if pregnant..

My period is due in the 23rd (next week) and me and my boyfriend had unprotected sex on the 14th of July (I took the morning after pill but haven't had a period since, this one is the next cycle), but we also had sex on the 7th of August (again I had to take the morning after pill as the condom split). If I get my period on the 23rd does that mean I am not pregnant or could I still be pregnant from the last time we had sex?