I got strep right after a yeast infection, and not wanting to go back to yeast I didn't want to do antibiotics again (I was pregnant). My granola sis-in-law suggested a couple of things that turned out to be miraculous...
First, gargle with vinegar and water - it has to be apple cider vinegar, 3 parts warm water to 1 part vinegar. It's disgusting, but it totally clears out any gross stuff that might be caught back there and it disinfects safely.
Second, take grapefruit seed extract. That's even more disgusting if you get the liquid, but again, it's super duper effective. It kills off all the bad stuff in your system. You can get it at any healthfood store. I tried it first mixed with water and could barely choke it down. If you mix it with apple juice or something like that it's doable. Super duper bitter, but amazingly good for your system.
Just those two things got rid of my strep in 2 days - no drugs! I recommend it to everyone because of how effective and safe it is.