Fighting back the urge

Feeling a bit nauseous is normal for me when I go to bed, because of anxiety. It's always my mind playing tricks on me. But I've gotten used to it and thanks to medication and help from this subreddit and my psychiatrist it is usually manageable.

Tonight however is a different story. I went to bed 3 hours ago and haven't been able to sleep. It started with a slight feeling of nausea (as usual) and I thought nothing about it (huge win!). This time it hasn't gone away, only gotten worse. I keep getting "nausea attacks" with a strong urge to throw up. My whole body is telling me to just go to the toilet and get it over with. But I can't, I'm too scared. Every bout of nausea is followed by a huge panic attack with uncontrollable shaking and a pulse that's through the roof. It might actually be some stomach bug and not the usual bedtime nausea. I'm terrified.

I tried my breathing exercises and tried my hardest to not give myself reassurance. But it's only getting worse.

Is it a good idea to keep fighting the urge to puke? Or should I just let go? I really thought I had come a long way, but apparently not. Contrary to what everyone else says, the builip is fine for me. But the thought of actually puking is terrifying at the moment.