No period for 3 months!! Help!!!!

Anna

I’m 16 and have had my period for about 2 years now but it’s been super irregular for the most part and now I’ve missed my period 3 times in a row!!! I last had it on January 2nd and it’s now April 30th !!! Is this normal? Should I be worried? (By the way I’m still a virgin so I’m not pregnant).