My Dog Is Going Crazy!!!

She is an aging dog and as they begin to age, they start to lose bladder control. Does she act embarrassed or like she's scared she's going to get in trouble? That could be a sign of bladder control loss.

Talk to the vet, if it's not an allergic reaction the the injection (which I've never heard of that type of reaction and I worked in a vet, but anything is possible I guess), she should get a good geriatric blood work screening to see if anything else is going on.

Perhaps she's sensitive to the grass or fertilizer you may have on it, and prefers not to go outside right now. Try getting a puppy training pad, and showing her where it is, so maybe she will at least limit her accidents on top of the pad.

Since she is both peeing and pooping on the floor it makes it hard to think that it is something other than behavioral.
Could be a reaction to meds for itching though. Specially the peeing part. Pooping (?) Are her stools loose? If they are she could be having a hard time controlling her bowels. (antibiotic reaction?)
Dogs do have problems controlling their urine and stools as they age but usually not at the same time and suddenly as she has done. They generally have a few "accidents" at first from time to time. Then they happen more frequently.
C.

Have you called the vet? It may be the way the antibiotic affected her, but that doesn't sound normal if she hasn't been doing that all this time. Although animals tend to go again in places they've already gone. Is she continuing to go in the same place everytime? If so, you may need to have a major carpet cleaner come in and use the special pet odor removers and maybe even block off that area for a while. Go back to the house training technique you did before. Either way, I think I would mention it to the vet just to get some advice.

Yes your pup is aging and that could be a factor. I agree with the other posts, you want to check with your vet of course and look into a reaction to what she was given or may be exposed to. I was curious about what kind of a shot she was given. Did it contain a steroid? If so, steroids can cause them to lose control over their bladder - they don't even have time to let you know they need to go out, it just happens. This happened to my chocolate lab a few years ago. When he peed in the house he was totally humiliated (poor thing!). This is a dog that had NEVER gone in the house before, but he couldn't help it. Anyway, just something to be aware of. Give her lots of love, as you know labs can't get enough (especially if they are not feeling well!).