Medication (question)

Potentially triggering only due to the severity of my phobia, and will be uncensored.

I’m currently 17 and have had emet since I was around 8. There’s no trigger to it I don’t think and I believe it stems from being autistic and sick being a sensory overload for me. My emetophobia has always been extremely bad and has prevented me from comfortably leaving the house for years, however over the last 6 months it has progressed to be significantly worse. (I only worry about myself getting sick, not someone else)

I cannot leave the house for more than 2 hours without an inevitable panic attack, and I can hardly leave the house at all without my mum. If I do have a panic attack, it doesn’t end. They last hours until I exhaust myself , and when I do have one I sob and scream and physically cannot breathe. I also gag during panic attacks and nearly make myself physically sick. They stem from me thinking “oh what if I feel sick” which then gives me anxiety induced nausea which only gets worse and worse until it’s so bad and I cannot tell the difference between it being real nausea or anxiety based. To me they feel exactly the same.

My life is so limited with me having a chronic illness and autism already and my emetophobia makes it awful. I tried ADHD meds for the last week as I also have ADHD to see if that calmed it down, it had no effect and they also made me feel sick so stopped taking them.

Tomorrow I have a gig, as I’m a musician. It’s really important to me and a lot of my family and friends will be attending. When in rehearsals, I frequently felt sick and stopped singing mid song, leaving me stood there panicking on the stage. This is very common for me and practically everything I enjoy gets ruined by a panic attack. I really really truly want to do it and do well.

So, should I try and get anti-nausea meds tomorrow morning? Also, do anti-nausea meds only prevent REAL nausea or anxiety induced nausea. I cannot find the answer anywhere on Google. Also, are any of the over the counter ones worth it? Also I live in the UK. Thanks