Pink watery discharge

Elizabeth

Hi guys! So I had a miscarriage back in October and my periods went right back to normal 28 day cycle. This is my 3rd period since then. Had sex on cycle day 11 of this month and on Cycle day 12 at night I felt like water going through and I got up to check. I had watery pink discharge that went through my underwear. Wiped it away and now on cycle day 17 wiped very light brown. Has this happened to anyone?? 12 days till next period.