Makbike
I think all the above suggestions are good ones. Aquaphor is good, A&D is good, chamois buttr, bag balm etc. You can even use eucerin creme (not lotion, the creme). But I wonder about the douching. In general, all those products sold for douching are completely unnecessary and disturbing to the natural, fine, pH and microbiologic balance of the vagina. Eating yogurt with live active culture (bryers has one they call probiotic) will increase the number of good bacteria in the vagina. But douching every other day with anything sounds a little suspect to me. Once maybe. Maybe. Plus, you don't mention infection, you mention irritation. In which case, why is your doc suggesting you irritate the area more with a douche? I'd ask for lots of explanation. Lots.
Good luck on the healing. I'm sure you will. The body is amazing at taking care of itself given half the chance.