Hello. Welcome to hcm.
There is very least chance of pregnancy
as you did not have periods for many days and your uterus
is ablated,so fetus cannot survive in that environment. Pain can be a gynaec pathology or urinary.
It can only be ruled out by usg scan and a pelvic examination. Also it is better to have a cardio check up done with complete blood examination as you have spinning of head which might be due to anaemia
All the best