So i recently had (protected) sex. But I am not realllllyy concerned about that part, im more concerned about a few days before where my boyfriend was grinding on me in bed (my pants were slightly pulled down, exposing the upper half of my underwear) things got a little steamy and he came on the upper part of my under wear and little on my lower back. Me being my paranoid teenage self, (and also may i say, very inexperienced) I am very concerned i may be pregnant, talk about jumping to conclusion right, I know it sounds ridiculous but im not sure if his cM went even a little bit into my vagina somehow. I dont remember when last period was for sure but I know it was either Dec 31st or Jan 1st. I have been a tad grumpy lately, as I am when my period is nearing. Someone give me some reassurance cause i have gone into full panic mode and its all i could think about for the past few days. I also have been getting some cramps in my lower stomach also as i do when my period is almost here but it might be because i drank a whole cup of coffee within 10 minutes not to long ago.