Sorry if this has been posted before, my girl has just developed a sticky yellowish discharge from one eye any suggestions and remedies greatly appreciated or its a trip to the vets.  Thanks guys.

just searched for sticky eyes for you, newfiedreams posted this a few weeks ago:

Sounds like she has an eye infection...which would be best solved with antibiotics from the Vet, in the mean time you can GENTLY bathe in saline solution

or euphrasia  tincture if you prefer herbal this sometimes cures without need of vet.

I'd be straight down the vets if it were me, no point wasting time waiting to see if it gets worst but bathe it as well to stop it sticking together.