Ligament pain/ constipation/ cramping?

C

I need some advice! I’ll be 12 weeks on Sunday and within the past week have had horrible pains in my uterus. The “cramps” come and go but aren’t like my normal period cramps. These are like someone is stabbing me with a knife and after about 15-20 seconds it goes away. However, I’ve noticed they are more frequent lately. Is this just ligament pain? Seriously considered calling my doctor. No blood! It’s so uncomfortable 😫