what cm is this.... i'm 8 days from my next period and i'm kinda freaking out... me and my SO bad protected sex the other night and i had lost my virginity, & the condom broke but he pulled out way before he came... should i be worried? thanks ladies! (btw i am 19, and before you come at me to do BC, i'm allergic to 99% of pills i've tried and i don't want to do the patch, IUD or nuvaring)