Cat fishy smell / discharge

[LadyTreasure]

Hi worried about my cat who is 5 years old. She has started to have fishy smell/discharge some days its a huge amount and others its very little but its been going on for a few weeks. I have read up online and some people say anal glads but this is not coming from her bottom.  

Sometimes its milky and others its clear and like water but it stinks of fish.  
I would have taken her to a vet but the last 6 weeks have been hard cash wise due to ill heath and i am scared i cant afford to get this fixed.

She is fine in herself and eating and drinking fine. What could this be and how would a vet treat it??

[AnnieBrooke]

My cat smells peculiar when he eats a certain canned food, almost musky, and the smell happens almost right away.  Do you think this is diet-related?

[opus88]

So than do you think this discharge is vaginal? It could be vaginitis or a urinary tract infection and an antibiotic would therefore be needed, this could be causing her alot of discomfort and needs to be checked out by a Vet, who would do a swab of the fluid to see what exactly it is and if bacteria is present.
I really hope you can take her to a Vet clinic and have this looked after.

http://www.petplace.com/cats/vaginal-discharge-in-cats/page1.aspx