Today me and my boyfriend did unprotected sex for 3 seconds. My period is very irregular i get them every after 2 months or rarely every month but i dont have the exact date of my period. It was stupid of me to tell my boyfriend to slip it in because i thought it was safe b/c i was having symptoms of my period already it has been 2 days, my boobs was swelling and my lower back feels uncomfortable. & my boyfriend i never see his pre mature cum unlike my ex where i could see it on his nob. My question is.. Could i be pregnant?