Please help!! Need advice!

Can a woman still get pregnant if he didn’t cum inside you that his dick was in and out than he put a condom on even though him and I checked to make sure nothing was coming out and I didn’t feel anything go inside me besides his dick😂😂 So should I worry? My period start this weekend but my boyfriend did that last night!?! Would it effect my period next month?? Would it stop my period?? Couple of people told me I shouldn’t worry!