I've had a semi good pregnancy this entire time but now that I'm almost 37 weeks it feels like it's…

I've had a semi good pregnancy this entire time but now that I'm almost 37 weeks it feels like it's going downhill I'm tired all the time, I have no energy, I'm having irregular painful contractions, back pain, and heartburn that milk isn't helping; I still want her to stay in for another 3 weeks I just hope the 3 weeks go by fast