Hot flashes, low grade fever, lots of painful cramping during ovulation

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I’m going to make an appointment with my doctor but I’m wondering if any of you ladies have experienced this before. I’ve been breastfeeding my son for almost three years and I’ve been weaning him the past month. He’s doing two very short feeds a day. I haven’t had my period yet so I’ve been <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> this month thinking maybe I’ll ovulate because of the weaning. I got a positive on my clear blue and on my strips for ovulation yesterday. But I’ve been having major cramping for a week. Today I’m having hot flashes and a low grade fever. What is going on? I’m wondering if it’s hormonal or if I have an infection. Side note I drank a cup of fertility tea last Sunday and that’s when a lot of the cramping started.