I tried all of the above and many other things (including freezing, food grade hydrogen peroxide, apple cider vinegar, Vit A) before breaking down and asking my doc for Aldara. It's expensive but worth absolutely every penny. It never hurt and worked wonderfully. I am thankfully wart-free again!
I'd try other things before Aldara but if you don't get rid of it or more show up, get treatment ASAP.