Owlwatcher, I’m not a doctor. But I’ve been in the position of having an excruciating toothache and being unable to seek immediate dentist care. Please take anything I say with the first sentence foremost in mind.
If I were you, I’d definitely keep up on double doses of amoxicillin. It’s usually a fairly mild antibiotic, and your infection is bad enough that double doses are probably warranted. You may also want to eat some yogurt daily, if you can; it will lessen the ravages of the antibiotics on your intestines. If at all humanly possible, get more antibiotics from your doctor on Friday, as well as the blood pressure medication. If you can’t afford to purchase prescription amounts, tell your doctor that, and ask if they have any samples they can part with.
Clove oil and orajel will help for a while, as will the peroxide and Listerine rinses. They usually need to be reapplied after the rinses, unless you’ve got some sort of packing or cotton wadding in place.
Chances are good that you can safely take 1 1/2 to double doses of whatever painkiller that doesn’t interfere with your blood pressure medication. If it only works for 4 hours, make sure you take it in the middle of the night; otherwise the throbbing pain will wake you up.
Keep a glass of ice water in the fridge, with a straw in it. Keep ice in the freezer. If you wake up in pain, and none of the above techniques have helped, sip ice water through the straw, keeping the straw as close to the inflamed area as possible. It will help keep the swelling down.
I wish you the very best of luck, dear, and I hope you’re able to get the help you need soon.