Ball/pain in the tummy

Jessica

Hi, I'm 20 weeks tomorrow and I have this hard ball above my bellybutton on the right side. It kind of feels like a pulled muscle but today it's so painful to touch. The pain is also on the bottom right side but not so bad. It comes and goes. Has anyone had this or does anyone currently have this? I have an ultrasound and doc apt tomorrow. Just wandering if anyone else has had this before.