Idk what's going on .. Tmi maybe

My period literally started on the 8th, was very light, yesterday on the 9th it was light/medium flow. And today well it's very light and pretty much over. I've never experienced this before. I'm still experiencing nausea but like if I had my period I'm not pregnant obviously. I'm just confused. Anyone ever have their cycle shorten from 7 days with medium/heavy flow to 3 days of basically nothing?