is this back labor or just aches?

I am 39+1 and experiencing On/off contractions accompanied with Severe middle back pain that comes and goes in intensity. Please excuse any typos I really don't feel good at the moment 😣
Is this back labor or just back pain? I'm a bit nauseous as well not sure if that matters. I didn't do anything out of my normal routine today. Just feeling like 💩 

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