So I started my period last month on the 16th. I messed around with my boyfriend on May 25th. He put just the tip in for less then 5 minutes. I'm a virgin. He jacks off all the time so he knows when he's about to an stuff. He swears he was no where near , but I'm still scared. I'm late for my period by 3 days and I'm freaking out. I might be late because I just recently started exercises at a hard level the other day. I have mild cramps like my periods coming and feel the need to urine frequently even when I don't have to. Our parents would both kill us, so we can't really take a test. HELP? ASAP!