My boyfriend and I are very sexual but we have never had sex. We usually dry hump and each time we do we are fully clothed. Last Sunday (the 21st) we dry humped and that was it. I was scheduled to get my period either Christmas Eve or Christmas day (my periods have been happening at the 25th-27th of each month since maybe March) and it is now New Years eve and haven't gotten it and im worried. I had this scare last month as well but my period came 2 days after the dry humping session. I would like to know why im late and if theres a chance I could be pregnant.