Is this normal?

Feeling anxious, but don’t want to be annoying and call the triage nurse or even waste their time in labor and delivery again. For the past two days I have just been not feeling well, very uncomfortable and nauseous. I also started having this new back pain that is pretty painful. It feels like this intense pain in my lower back that extends all the way around my lower abdomen. The type of pain is hard to explain, but it feels like someone is ripping me in half from my spine. The pain isn’t constant, it comes and goes through out the day. Should I call the triage nurse or is this just normal third trimester pains? I have such a hard time

Distinguishing what is normal and what isn’t. 🙁