Irritable Uterus

Has anyone been diagnosed with an irritable uterus? I’ve called the doctor at least three times about my belly getting hard and tight a few times an hour during the day. They said as long as they aren’t occurring more than 5 times an hour and I’m not bleeding or leaking fluid it’s normal, and I had my cervix checked last week at my anatomy scan. They said I may have Braxton Hicks or an irritable uterus. I have my regular appointment on Friday, they didn’t want to see me before then because they haven’t increased in intensity. I’m sitting here freaking out and wondering if anyone else has had this.