Why did i miss my period? i haven't had my period since the end of november. i am a virgin but my bf ejaculated on my vag area

Go get a preg test: Even if your bf ejaculated on your vagina, his sperm still could have travelled up your canal and got you pregnant. Sounds like their was unprotected sex, so get a preg test, .....Then see your family doc.

See your doctor: There are many causes for a missed period - for some women it is not uncommon to skip a month, especially if they are under stress, over exercising, or losing wt. It could also be due to hormonal issues. In order to determine the cause you should see an ob-gyn. I would also discuss getting on birth control and using condoms "just in case".