Uterine cramping

Emma • I have one 16 month old and miscarried at 6 weeks in late October of last year the due date was 5/7/16
So i recently miscarried it was in late october and i have already had my 1st period since but my question is; is it normal to have light brown discharge before ovulation and afterwards to have uterine cramping? Because i have been experiencing a lot of that and have had breast tenderness quite frequently lately and ovulated 8 days ago so idk what to think about it ... My last period was on 1/19/16 so its not due yet