Nausea just reappeared for me as well at 31 weeks 6 days. I didn't even realize nausea was a common thing at thos stage.
I've had to start taking Zantac. Baby is pushing up on stomach, progesterone is relaxing muscles, and having awful acid reflux. I was nauseous & vomiting again until I started the Zantac. If you feel acid in your throat too talk to doc about reflux. For the back pain I soak in the tub.
Same here with the nausea :(
The back pain has definatley increased now then ever before and my nausea has also returned :( looking forward to delivering that's foresure!!!! 6 weeks to go.....