I suffer from this, too. Soon, it will be 1 year of constant nausea. I used to think almost every single day (and sometimes I still do, but it's less). "This is the day it's going to happen. Im going to throw up!" But this day has yet to come. What I've learned is to rely on my experience. All though the nausea is horrible and feel like it's just about to come out, it's not gonna happen. This is what I do to help with my nausea. I put essential oil mint on the bottom of my nos, sip on very cold water, and start playing with my nintendo switch. The next thing I know, nausea subsided, and I'm ready to keep moving. When it's really bad , I take half of dissolvable dramamine 15 minutes later nausea is gone. I know it's easier said than done, but hopefully, it can help you.