Has anyone heard of this?

I went to the ER then L&D this week because of pain and extreme bloated feeling. I have a cyst on my ovary and thought it may have ruptured. After being monitored for a while, they told my uterus was extremely irritated. The graph from the fetal monitor showed “contractions” back to back for hours. The nurse said they were more intense than Braxton hicks but not true contractions. I’m currently 33+5 and have never heard anything like this before.