What Causes Discomfort In Uterus With Nausea?

Hey, i have a few different symptoms. At first i was feeling unwell for a day and ended up getting a cold and now I still have the cold mixed with a weird feeling in my uterus that feels like im about to get my period (which doesnt come for 7-8 days), after i eat i feel sick, and little but of a peeing sensation when i pee. Is the weird feeling in my uterus to do with a urine infection or could i be pregnant? (last sexual intercourse occured 2 days ago)