It’s been 93 days

I just turned 16 and it’s been 93 days since my last period. It’s the second time that it’s been like that but the last time I missed my period it was 83 days between periods. My pediatrician is sending me to a gynecologist which I’m glad about but I also don’t want to go on birth control because I’ve heard that people gain weight or break out because of it. Im a virgin, so I can’t be pregnant though I have noticed weight gain. I need some opinions/advice ladiesss!!!