Painful Ovulation

I had my baby about 7 months ago. I'm still breastfeeding and have gotten my period since he was 4 months. Every time I ovulate it is painful and then for almost my whole 2 week wait I am crampy off and on and my lower back hurts. I'm wondering if this is normal? Before having my son I could feel twinges of ovulation pains but now it's much more and quite uncomfortable. I'm hoping I haven't developed something that could effect my future fertility :(

This was posted in another forum but I didn't get anything back...hopefully someone has some insight!