I went camping a week ago and on the second night once zipped into the inner pod and sleeping bag I started to feel quite shaky and had an awful burning pain in my stomach. I had to get out and started to panic when I couldn't open the zips because I was shaking. I ran to the toilets and then had to get out of there, on the walk back to the tent I threw up in some bushes. I got back to the tent and then fell asleep in a chair next to the door. I eventually went back to my bed but had to sleep next to the open pod door with my sleeping bag open.
I do get slightly claustrophobic but nothing major and do feel anxious out of my comfort zone, especially with being away from toilets. However, this has really improved this year and I've camped loads of times before.
So panic attack or tummy bug??