Chafing

This is super tmi, but I really need help with how to fix this. I've recently gained some weight and since it's summer, I've been walking around a lot. I shaved my bikini line yesterday with no after treatment and walked around all day in a dress today. Later during the day my vag and inner thighs we're BURNING. I stuck it through and made it through the day and now that I'm home, it hurts to move at all. I put a tampon in, took my underwear off and have been applying aloe gel. I'm going camping on Saturday and need this fixed. What do I do??