Uterus on Fire!

I’m 7 DPO as of today with AF due in 1/4. I’ve had 4 IUIs and three failed ones. 1 ended in MC between 5-6 weeks which my first and only pregnancy.

Yesterday, I had a couple of twinges that were rather noticeable and off and in for a couple of hours. After the twinges stopped, I started having a slight burning feeling in my uterus. Today, the burning feeling is still persistent and has even increased and my belly is slightly sore. My breasts are very sore also, but not even a squinter of a line (POAS freak), but it’s still very early.

Is this normal for very early pregnancy signs? I’ve only had the one to compare it to and I was on fertility meds, so I have no idea if this is normal when people aren’t on meds.