I heard ginger is good for nausea!
I have lots of experience with nausea and Rolaids/ tums are always my go to. Peppermint oil and breathing helps if it is associated with anxiety. If you need to, you can get a prescription for Zofran which works extremely well. But if anxiety is the root of it addressing that will help tremendously
I struggled with nausea for months and then made any action related to “relieving” my nausea a ban. The nausea was greatly caused by anxiety and just sitting with feeling it instead of trying to fix it actually made it go away. My therapist and I created a nausea hierarchy of exposures and I did a fear script of it. My experience was that feeling nauseous is actually just my body feeling anxious and food disgusted me because it’s “not right” - that is just my experience but maybe it helps