I did some reading on this too. It's not a good idea to take mega doses of vitamin C if you have any trouble with your kidneys because it taxes your kidneys when it is being processed by your body. I'd also think twice about using vit C tabs internally as most of them are chewable and have sugar in them and sugar vaginally leads to yeast infections.
Everything will be ok in the end. If it's not ok it's not the end.