Mamás!!! Help

Can I use a little bit of Apple cider vinegar on my 2 year olds boil? I noticed he has like a pus filled pimple looking thing in his left hand. I messaged his doctor today in the morning but haven’t gotten anything back. During the afternoon some pus started to come out, been keeping it as clean as I can but I don’t want to mess with it. I was wondering if I can use some Apple cider vinegar to put in it and cover it with a bandage until his doctor gets back to me.