Period

I’m not on birth control and never had, I’m a virgin, my period is somewhat regular but earlier this year I had a three month long period, it was light I was in no pain but it was just scary as I only had my period for like six months prior to that and it was four days long. Now seven months later I’m afraid it’s starting up again. My period has been a month long of just spotting. I’m in no pain at all. My doctor told me it was most likely just hormones last time but again is kinda weird. Any advice?