sick cat

I need some advice about my 8 month old kitten,she has constant diorrhea and smells bad all the time,she has been like this since we got her at 5 months old,when we got her she was pregnant,we didnt realise this till it was to late ,she now has 5 kittens 6 weeks old.we have taken her to vets twice about problem she has had antibiotics and worming tablets ,she is still no better now she has been vomiting too and seems to have lost weight any ideas to whats wrong with her?

Antibiotics can interfere with proper G-I function. Probiotics can help. Since worms have been ruled out, you might consider that the problem is diet-related. But the vomitting and weight loss concern me. What has your vet said about that?

I would take her to a feline specialist if you have had such a long-running problem- have they ruled out coccidia- giardia- and other bacterial infections? Are her kittens healthy? Is she spayed now?

took tilly to vets they said she is fine its diet related she can only eat certain foods ,but now one of the kittens is being sick could he be the same as the mother?