Extreme Nausea

I have felt super sick all day. I feel full but have hardly eaten anything. feel like Im retaining water but no visible swelling. Acid reflux or something like that is off the chart. Been super exhausted. Now as Im sitting here I have back pain. Everything I do is hard. I had a pretty easy pregnancy till I hit 35 weeks and am now 36+2. My nausea is so bad, Id probably feel better if I actually threw up but no luck on that front. ugh, i just want to ball up and cry.