anyone have any idea what's wrong

So recently I started to get a feeling that I had to pee but barley anything would come out at first it didn't hurt or burn so I went to the doctor and got tested for a uti well it's not that..so she felt my uterus and said it was bigger than usual (took a pregnancy test I'm not pregnant) I go back on Friday for a sonogram of my uterus. but since this it seems worse like I'm going to the restroom every 20 minutes it's uncomfortable and barley anything comes out also there is this weird tingling sensation on my vagina. it only happens for a couple of hours than I will be fine..anyone experience this before?