My longest-standing friend has her birthday tomorrow, it's a milestone one and to celebrate it we were supposed to be going for a weekend away with two of our other friends. Obviously that isn't happening now so instead the four of us were planning a (socially distanced) barbecue and drinks tomorrow night, the friend who was going to be hosting it lives alone so it would have been only the four of us.
My friend has now decided she would rather go for a meal in the city centre and then on to a couple of bars afterwards so has booked a table for us all.
I really don't want to go into the city centre and I really don't want to go to a restaurant and then bar hopping. I'm not hiding under my bed with a bottle of antibac and twenty loo rolls, I do go out places, but a restaurant and pubs feels like too much right now. I do have GAD and PTSD which are more or less under control but I do find health issues triggering so I'm easing myself back into normal activities whereas the proposed birthday feels more like diving in with both feet and I know I'll spend the next two weeks obsessing over every tiny "symptom", feeling panicked, not sleeping, and feeling like I have iron bands around my chest preventing me from breathing properly.
AIBU to say I don't want to go? And how do I tell her I'm not going?