Vaginal itching after periods. Health!

I have been facing this issue for the past two years why this problem only rises exactly after my periods or at the end of my periods.. last year the problem started to get violent as it started occurring before periods and would last for a week. And yes I have consulted a doctor on practo she referred some counter medications including candid b cream which further triggered abdominal pain however i later on visited to the gyna nearby she did checkup and gave me medication for one time after that I haven't face any issues it was on last November until today I am facing this issue again and I have done everything changing multiple pads taking extra care but nothing works out is it vulvodynia or what cause now I want to know the reason what's causing this as it is rendering my mental health