hi, I had my dog neutered about 6-7 weeks ago and he still has a small scab down there. It hasn't look red or infected but wondered if it normally takes this long for it to completely heal. What does have me concerned is that just above the scab now there's this little spot that looks like a pimple or blister type thing. It's kinda small but it looks like if you squeezed it, it may bust and 'water' might come out of it. My husband says maybe a boil type thing. Do you think I should watch it for a day or two or take him to the vet right away? I also wondered if a fire ant might have stung him there.....any thoughts appreciated. Thanks.