Nausea diarrhea period like cramps!

Marissa
I'm 30w4d and for the past few days I've been having period like cramps along with nausea and diarrhea. Over night and this morning I've had some fairly strong contractions that haven't been real consistent. The main thing that concerned me was the cramping. I left a message for the nurse at my ob office but was wondering if anyone has had any similar issues and whether or not it was a problem ?