Controling Nausea

Hello,

this year for me has been the worst, medically.
I've had much intense nausea and the worst is the doctors found nothing wrong with me.

I noticed combating nausea is really hard! But some thing that seems to help and seems really absurde is rubbing my skin hard, or scratching. Like the pain sort of drowns out the nausea. As if it interferes.
I'm not making myself bleed or anything but I use to scratch up and down my nail or my arm or hand and it would aleviate it.

Anyone else have a way to help them?