Yes I have had her seen recently.. two weeks ago. The vet said body condition was good and did gram stain with no results. Did pbfd test too, negative:
When was she originally prescribed the meds? Are they sealed or opened?
Use by dates can sometimes be safely ignored (depending on the meds) if the meds are not opened but others really should not be used if they have already been opened and a certain period of time has gone... it is not a straight forward answer so to ensure you are actually safe to administer what you have I really recommend you get qualified vet advice before taking the advice of internet strangers.
Many meds are ok to use well past use by date, but, not all medications are safe to use after a certain period of time especially if they have already been opened. I personally would call the vet to discuss your situation and best options - In the past I have been told by both my dogs and my birds vets that some meds are fine out of date and I have also been told to toss others that were opened for too long.