Uterus flu / cold

I went to my Gynae , and she did a ultrasound, I do have a small fibroid which they say can’t be the reason for secondary infertility. What surprised me is, she told me to be taking warm baths and to use warm bottle to place on my abdomen, that my uterus has / had a cold . Anyone heard of that . She prescribed Doxycycline as I had some cyst . She also did the Pap smear and days later am having cramps and yesterday I had a fever like feeling. Could I be pregnant DPO 7?