Period after D&C

I had a d&C on 29th March, 3 weeks ago, does anyone know what is the latest I can get my period? I know everyone varies but how long would be too long to not have one?

I’m a bit worried as I had unprotected sex and me and the OH had a few drinks and got a bit over excited, but I’m scared of falling pregnant again before my next period!

I’m actually scared to get pregnant again at all as I already had 2 miscarriages in a row, no healthy pregnancies thus far, so it wasn’t on the cards.

I have an appointment to get back on the pill, just for a while until I feel comfortable again to try, but I had to wait a month for that app! Now I’m just worried I guess!!