Hello my name is tammy and I haven't had my period since February and I don't know why I'm usually regular and I know I'm not pregnant I haven't had sex yet by the way I'm about to turn 16 in may so ik that I'm still in growing years but I still can't figure out why I haven't started yet I don't know if you got some answers please tell me thank you :)

Please repost this WITHOUT the lazy chat speak as it makes it very difficult to understand and therefore offer any meaningful advice.

Nothing to worry about (assuming that there's no way semen got near your vagina).
Teens often take years to settle into a pattern of monthly cycles on a regular basis, and some women never do. Some of your hormones just weren't strong enough last month to build the menstrual lining. You might want to do a lot of reading on the whole subject, anywhere online. At least the knowledge will help when you feel this way one minute, and another way the next minute!

It takes very long for your period to go on the right calendar basis

No I'm still a virgin its just I was wondering cause I've been on a regular cycle and didn't know what is going on