Cramping and soreness/uncomfortable lower stomach and pelvis area at 15 weeks pregnant

I am 15 weeks today and it’s my first pregnant. I have had no bleeding or serious pain, but my lower stomach/uterus/pelvic area is crampy and sore. It has been for about 3-4 days now. I also feel like I smell different down there, but my smell has also heightened so it could just be me. I have an appointment on Wednesday morning, but I’m just worried because of the cramps and pain.

Thanks!