That is a diagnosis only possible to be done through a veterinarian.
If the cat was recently pregnant you can look at the uterine horns for signs of involution (longitudinal stria on the outside of the uterus, signs of tisue sloughing on the uterine lining). However, if you have an older cat it will be difficult to tell if the cat had been pregnant at one point or has just gone through multiple heat cycles as both increase the size of the uterine arteries and the uterus itself.
The uterine horns of the cat is where an impregnated cat's kittens grow. Different than humans, cats have a Y-shaped horn on each side of their uterus.
The uterine horns
Only a veterinarian is able to tell you which kind of antibiotic is convenient for the cat. Also, he can tell you if the disease is an infection or inflammation. If it is an inflammation, antibiotics are not indicated.
If you're referring to a wound the best way to tell is swelling, pus and the wound not healing quickly. If you think your cat has an infection of any sort (even if you're not completely sure) take to a Vet.
Call your local humane society and they may be able to tell you of a low cost vet in your town or they may even be able to tell you what to do to help your kitty, whatever you do please do something as an infection in very painful for cats
Bring the cat to your vet.
The tail has got an infection. Tell the vet and he may prescribe an antibiotic for the infection.
Cat bites would more likely cause a bacterial infection rather than a fungal infection.
Uterine horns are where the uterus and the fallopian tubes meet. They allow the egg cells (ova) to reach the uterus. They are one of the points of attachment for the round ligament of uterus. The other attachment point for that ligament is the mons pubis. In cats, the uterine horns are far more prominent than they are in humans. In the cat, implantation of the embryo occurs in one of the two uterine horns, not the body of the uterus itself.
Not to be used by pregnant or lactating women or those with uterine inflammation or pelvic infection.
you can tell if your cat if fat is if her or she is lazy and chubby