I'm 16 and my periods have always been pretty regular for about four years now. I've never been sexually active or fooled around with a boy but the past few months my period has been off it was late by 10 days last month, and I've had this weird pain/soreness in my lower pelvic area kind of like a bruise and most of the pms symptoms.I know there's no way I could be pregnant but I usually don't get this bad of pms and I'm a worrier I feel like I'm tricking my self into symptoms any help would be greatly appreciated-E