10 weeks and weird muscle spasm. Should I be worried?

Rose • Spoken word/slam poet who is working to compete nationally. I love coffee, books, and babies. Obsessed with Breaking Bad
Last night I was lying on the couch and felt occasional sudden sharp, what I can only describe as "muscle spasms", on the left side of what kind of feels like my vaginal wall. It's like the area where my pelvic bone is and my labia. 
It didn't seem to bother me all night but then it happened a handful of times again this morning. I considered calling the doctor to ensure I shouldn't be worried but then they went away. Until now. I've only experienced one or two tonight. 
I can't tell if it's just my uterus growing and expanding and the muscles and tendons connected to the pelvis are just aching. It's not happening on my right side. Just the left. 
I don't know if anyone else has had any similar issues. TIA.