Sensitive vagina??

So, this is my second time going to the doctor for my vagina itching burning and irritated. Both times my doctor told me i had no sti’s/std’s and no yeast infection or bv. I dont know what else It could be. Its irritated when i wipe myself, and sometimes when i am doing nothing at all.

I remember a friend telling me that her detergent made her irritated down there but other than that i really know what to do but its annoying.

Anybody have any thoughts or suggestions PLEASE!?