I don't recall my boyfriend and I doing anything other than dry humping and that's about it. I got my period Nov. 2,I THINK. I know it was either the 2nd or 1st and it's Dec. 4th and I haven't gotten it yet,why is this? The only other thing I can think of was that he may have had precum on the tip of his penis and not thinking after peeing whipping,but this was november 30th. Can someone help me? I'm a worry-wort. Thanks.