Pain in my belly?

S

Hello! I'm 18 weeks and I've been feeling pain in my lower left abdomen and sometimes my mid section. Mostly sharp pains and when I sit up after laying down or when I sit and bend over. Should I be concerned? Is anyone else feeling these pains? I don't think think its round ligament pain, as I've gotten those and it's felt quite different.

Appreciate any input! 🙂