HELP ! missing my period for 3 months !!


Im 14 and I got my period when I was like 11 or 12. I'm a virgin. I missed my period for 3 months, then got it back. But then I missed one month which was July. I'm so scared what's wrong with me. what if I don't get my period this month? I'm so worried and is this normal? I can't focus and so stressed about this. please help!! :(