Ketones are absolutely still measured, especially when sugars are consistently over 250. They can damage your kidneys if they are high for too long. Are you maintaining a low-carb diet in addition to taking the medication?
As for the abscesses, I would be pretty worried about those. As a diabetic, especially with such poor blood sugar control, fighting off infection can be more difficult. If you go to the ER, they have to treat you, even if you don't have any money. Tell them you are a diabetic and you have these skin abscesses and they will help you. You may need antibiotics or they may need to be drained by a professional. You don't even know if these should be drained and the one by your rectum is in particular danger of getting bacteria inside, making it much worse.
I've never even heard of taking a bleach bath, by the way. I would be especially careful breathing in too many fumes from the chlorine in a confined space. Make sure the bathroom is very well ventilated if you are going to do this.
I would also look into getting on public medical assistance, like Medicaid. As a diabetic, you need regular medical care and you aren't getting it. You're blood sugar readings are way too high and you need to have a regular doctor who can help you get stabilized so you don't have long-term problems. If you don't qualify for public medical, maybe there is a low-cost or even free clinic in your area that you could go to. Do a search online.
But again, I wouldn't delay on getting those abscesses checked. I would worry that you could get a systemic infection that would be even harder to treat.