How long after miscarriage does your period come back?

Rachel

So I think I had a miscarriage a month ago. I was a lot of chunkier blood and before that a bunch of pink fluid gushed out. I figured since I’m so young I’d just get my period back right away. My period is 3 days late. I tested my ovulation day and it wasn’t extremely dark but it definitely had some color. I took a ept yesterday and it was negative. Could I still possibly be pregnant or I just am not going to get my period this month?