me and my boyfriend had sex last month the day i finished my period and he came inside me. this month i got my period and it only lasted for 2 days. my period is irregular but when i do get my period it always lasts for a week, this is the first time it only lasted for 2 days. yesterday was the 3rd day of my period and i didnt have any blood. last night me and my boyfriend had sex again but we arent sure if he came inside me. am i pregnant or could i become pregnant? please help not sure what to do..