Hi For The Last Two Months I Have Experienced Constant

Hi for the last two months I have experienced constant burning and itching on the inside of my labia majora,clitoris and vaginal opening.my GP was treating me for thrush but after 3 courses of antifungal medication,a pessary and a cream the symptoms are still there.i had a full range of swabs taken to test for everything from fungal infection,BV,STI's etc but everything came back normal.My doctor is now referring me to Gynaecology as he thinks it could be a hormonal or physiological issue.