Is there anything i can do to help my sick hamster other than the vet?

my hamster is very wobbly, has pus in her eye, vomit in her fur and might have had a blocked anus but its clear now. what can i do to help her? shes not very old and there's no openings in the vet clinic for months in my area. is there something i can buy at a pet store or drug store to help her or do i just gotta wait it out? please help!