Not feeling contractions, but have irritable uterus?

Laura

I get nonstress tests twice a week due to my hypothyroidism where they monitor me for contractions and baby’s heart beat

Today they told me I’m having contractions. The doctor said it’s “irritable uterus”

But I don’t feel anything different.

Is it just that I don’t know what the feeling is? Or they are just that mild?

Anyone else have irritable uterus and can share what it felt like?