Re: not sure what else to do
I can't help w/ the formula but there are probably other moms on here that can suggest the best kinds for allergy babies.
The pumping sounds very frustrating. Is there any way you can rent a hospital grade pump? Those are pretty mindless and you can just relax while the pump does all the work. You can call your hospital to see if you can rent one for a bit to build up your stash.
Since your baby is 8 MO could you supplement with solids for those 2 days instead of worrying about formula? For 2 days it probably wouldn't be a huge deal.