Does/Did anyone else have these strange sensations?

This is my first pregnancy and I'm 8 weeks 2 days and I'm experiencing the strangest sensations. It feels like I have nervous butterflies in my belly, a constant dull pain that feels like my belly is stretching, and there's one more. Today when I cough, sit down, do kegels, or try to use the bathroom there's a sharp shooting pain that starts (sorry for tmi) outside the vagina and shoots up to my cervix and uterus. It's very painful. There's no bleeding or anything. Has anyone else experienced any of these sensations? Any input would be greatly appreciated.