Over worrying

I am 22 weeks pregnant. I started having Braxton hicks contractions at 20 weeks.

It's usually 1-3 a day. Today, I am having several back to back and have been having extreme back pain. Which, I have written off as it has something to do with the extra vertebrae in my back. I am also have having bad stomach pain. I figured it was just round ligament pain. My mom wants to take me to the ER just in case. I don't want to be that first time mom that goes in for every little thing. I have severe anxiety so I worry over everything. Side note: baby is moving and kicking as usual. She's actually been extremely active today. I guess I just need some feed back to ease my mind a little.