First period after baby?!? EBF

When did everyone start their period after lo? And especially for those who are EBF? My lo is 20 weeks and I’m pretty sure I started my period yesterday. It’s really bad and I don’t ever remember having a period like this in my life. I have had little spotting here and there since he was born but just enough to show when I wiped but not enough to wear tampons or anything.