I also ask the question, what is oozing?
I'd also suggest that your profile lists your age, and certainly you can experience neuropathy, but it's also possible that a nerve was hit when the cath was done. Having had a lot of caths, one has to keep the leg very still for a long time, and that can pinch a nerve. Are you walking and exercising as directed?
If you leg remains numb, I'd certainly insist on an examination.