Heavy Period Problems

I haven’t had a period for about 3 months. No way I’m pregnant. Throughout the months, I had constant dark brown blood. Recently I didn’t bleed for about a week. Mucus and discharge went back to seemingly normal. Just two days ago, I became so crampy and sick to the point of diarrhea and vomiting. I thought I had a stomach virus. Well yesterday, I bled through my panties and pants at work because I had no idea that I would start a “period.”

The question is: Should I worry? The period, even through early in the whatever cycle I could have now, is DRAMATICALLY HEAVIER than my “pre-irregularity.”

The period isn’t had to manage, but I’ve never used the heavy tampons and pads ever since I started my period and I’m not use to this much blood.