i had bad cramps 3 weeks after giving birth, my uterus retracting was finished coz i had a c section i had a drug that makes it happen quite fast so it wasnt that. 2 weeks later i got my period, i had bad cramps again 2 days ago along with alot of watery discharge so im pretty sure i have ovulated in the last two days and would expect my 2nd period in 2 weeks time. so just look for the normal signs. im breastfeeding and got my period almost four weeks to the day after having my son!