Light Pinching at 13w

Aimee • 🌈💙 FTM April 1/19' 👶🏽 😇Angel baby Feb 18'

Experiencing light pinches in my left lower abdomen (uterus?) I'm 13 weeks today. Is anyone else experiencing this? They don't really hurt but just wondering if this is normal? I have my NT ultrasound tomorrow so I will be able to check on bubs, everything just worries me as I lost my last at 12w.