Missed my period again! helpppp?

I am a 15 year old girl, and YES I AM A VIRGIN. I got my period in february last year, an di missed april, may and june. I had pms and all the side effects, and some blotting but no period. I am healthy, no medical issues, 5'9 125 pounds. This year was a pretty stressful year, and i recovered from anorexia and i am still almost fully recovered, and my periods have kinda been irregular for the past year, but is this bad? Should i see a doctor? Help!