Labor near?

I woke up this morning feeling exhausted, like my entire body is sore. Lots of contractions and cramping, but that died down. Now I'm experiencing nausea and diarrhea, and I'm so tired I want to take a nap. It feels like I have a flu or something, but no fever or cough/congestion. I've also had watery discharge the past few days, while loosing my mucus plug. I'm 38.5 weeks. Does this mean labor is near?