A small amount of blood is normal drainage and is desired. It should have some watery blood mixed in. The antibiotics take at least three days to kick in and should start helping soon. If you can't get a dose given make sure you extend the days given by another day. all has to be given on pills.
I myself request liquid antibiotics, much easier to hide in tuna juice. Pills I get some Pill Pockets and tear a little piece off and 'glue' the pill to the inside of a piece of bacon, my cats cannot resist bacon. It may take a few pieces, but it works. you can try hiding the pill in a tiny amount of tuna and see if she will gobble it down. If it is a capsule, you might call the vet and see if you can open it and pour it in a SMALL amount of tuna for her to eat. If she is impossible like one of my cats was, (request a liquid saying she is impossible to pill), lift her front feet off the ground by the scruff on the back of her neck (instantly quiets them) and squirt it in the side of her mouth. works very well and is quick and saves a lot of blood (from you!)
I myself request liquid antibiotics, much easier to hide in tuna juice. Pills I get some Pill Pockets and tear a little piece off and 'glue' the pill to the inside of a piece of bacon, my cats cannot resist bacon. It may take a few pieces, but it works. you can try hiding the pill in a tiny amount of tuna and see if she will gobble it down. If it is a capsule, you might call the vet and see if you can open it and pour it in a SMALL amount of tuna for her to eat. If she is impossible like one of my cats was, (request a liquid saying she is impossible to pill), lift her front feet off the ground by the scruff on the back of her neck (instantly quiets them) and squirt it in the side of her mouth. works very well and is quick and saves a lot of blood (from you!)