Help... (pregnancy question)

Hi, im I'm high school, and i have a boyfriend. We didn't have actual sex until maybe about 2-3 weeks ago? but before that he tried to get in.. but did not fully enter because i said it hurt. so that wasn't really sex i guess... but that time was unprotected. and then few weeks later he wanted to try again so he did enter, but only once, for a few seconds (i think he actually entered cuz it hurt a lot). and that was unprotected too. and later that day he bought condoms and we had sex.... yes, I'm ashamed. i regret it very much. but he is leaving soon for college so he wanted to do it before he left. but these days I'm not sure if i am pregnant. the chances are low i think, but I'm still really scared i might be. not too long ago, i had a very, very short period for 2 days. i was scared because i thought it was spotting.... i usually get my period very heavy and for one week. and it wasn't even when i was supposed to get it. so i got scared and started looking up symptoms but i don't really have any others. and now its around time i get my period and i didn't get it yet... so i freaked out and thought someone could help me on this. i should have my period soon, or should have gotten it(my period is a little irregular). I've been getting cramps a little which happens before my period starts, but I'm not sure if its because I'm pregnant or because I'm getting my period soon. could someone help me?! or tell me what to do?! PLEASE. my mom doesn't know i have a bf and i am freaking out. please. help me...

[lovelyglover]

Did he c.um inside Yu or did the condom break

[ohlalaaa]

he did *** inside, but i don't think the condom broke... but I'm not 100% sure cuz i didn't check it..