Ovulation ?

So I’m 3 weeks and 2 days postpartum and I’ve been trying to track my ovulation coming back as I want to track everything I’ve been having a mild twinge/cramp feeling in my left ovary and my ovulation tests are positive but I’m not actually sure if the ovulation tests work so I’m just wondering are the twinges/cramps in my left side/ovary a sign of ovulation please and thankyou