Yesterday I had my 8ish month old cat, Gadget, neutered. Just a few minutes ago he walked over to the litter box and began to urinate. He seemed to have some force behind it and I seriously thought about timing it. He took forever! Anyway, after he was finished, I noticed it was frothy/foamy. I've never seen anything from him like this before and I'm wondering if, because of the neutering, he is voiding a little differently now just due to the discomfort he is in. Any ideas?