12 weeks postpartum

Ra

I had a c section and at 6 weeks had my postpartum checkup. At 7 weeks I started birth control pills. It’s now 12 weeks and I still haven’t gotten my period. I get cramps but nothing. No I am not breastfeeding and my husband used condoms for two weeks after I started the pills. I am wondering should I see my GYN or is it the BC pills?