What does stretching pain feel like?😳

Kierstin • Wife to an amazing Husband and Mommy to an amazing little girl 💕
For the past week I've been having some full pain in my legs, pelvis, and sides. I've heard the baby's HB today actually but even bough the pain don't hurt and isn't strong it's still scary? 11 weeks BTW
So with that being said what does stretching pain feel like ?