Monthly visitor

Lindsay RN

So I’m 6.5 months post partum.. I stopped Brest feeding my baby girl about 3 months ago. I’ve been on birth control and still no sign of my period returning. Is this a normal or should I call my doctor? This was my first baby so I’m just don’t know. M SIL said hers returned at 8 mos but she was still breastfeeding at that time.