I'm 12 days late (no possibility that I'm pregnant)?

Ok well if you've never had then yeah you ct possibly be pregnant, but, you may still have an infection. Once when i was a virgin still i had a UTI (urinary tract infection) that came from no where. Also i recall my friend having her monthly visitor very very late and she ended up having an infection (not an STD) but it does happen. If you're experiencing any kind of stomach pains, discomfort, odor, etc. then you may have an infection. But if everything seems to be normal and you feel ok then it may just be a little late. I'm currently in college and when i switched from leaving my all girls college to coming back home, i usually get my monthly around the 2nd but when i left college i started getting it around the 22nd-26th. They don't joke when they say we link up with eachother like wifi. Are you spending a lot of time with a friend who's a girl who has hers at a different time than you? or even started a new job where you work with a lot of girls? bc i ended up linking with their cycles haha, so it could be nothing. I would suggest to wait a few more days and if it still doesn't come within 3 days go see a doctor just to make sure, but if you have any other symptoms go see one asap.