my boyfriend & i wanted to have sex, but we didn't have a condom. so we used a brand new plastic bag and we did it. we did it straight for about 10 minutes. he pulled out when he was ejaculating but kept the bag on. it wasn't much, i don't think..but, don't know why..but i said it was okay for him to put it back in & keep going. so we kept going with that same bag. we had sex for about 5-ish more minutes & he went hard so the bag eventually broke through the top. i guess most of the cum was pushed down away from the tip. but i'm scared there was some there when it broke. we didn't realize it broke for another like 1-2 minutes. so we stopped then, of course.. & i was scared. my cherry (hymen) isn't popped, so i know that reduces the chances of pregnancy. but i'm not on any type of birth control.. & about a week or so later, i got my period. now (almost a month later), i'm having cramps. i used to just have cramps a lot, so that still may be the cause. but it's kinda just on the left side, sometimes its all through my stomach. I've had no spotting. & my next period is 1-2 weeks away, in case you wanted to know.. so, i'd like to know what are the chances that i could be pregnant? since my cherry isn't popped.. & all the other stuff. i have heard many many many stories about this kind of stuff, & i don't know what to believe. so, i would really like some help. /: thanks(: p.s. - sorry that this is so long. ):