39 weeks lots of hard period like cramps

I’m a FTM and I don’t know what to expect when it comes to labor/ contractions. The last two days have been having really rough period like cramps and it hurts to walk. I keep calling my after hours nurse line and all they keep saying is “hydrate and rest, if you’re not bleeding and can’t time them you’re fine” but I’m not fine?? It hurts a lot and I’ve been having to call into work over it. Yesterday I could feel them in my thighs but since it wasn’t consistent they aren’t taking me seriously. I’ve been at 2cm the last two weeks and I’ve been losing my mucus plug little by little over the last week and today I had pink discharge. Please help.