Seen a doctor due to pain in the vulva especially when i sit down(when there is pressure on vulva). vagina swab test detected gardnerella however discharge has no smell and is not watery. report also stated normal vagina flora. how is this possible?

The vaginal flora contain many types of bacteria considered "good" & "bad". The good bacteria (i.e. Lactobacillus species) prevent overgrowth of the bacteria that cause malodorous discharge (i.e. Gardnerella). So simply identifying Gardnerella on a swab of normal appearing discharge is totally normal. Additionally, your vulvar pain may not have anything to do with an infectious organism.

It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. Visit this site for info and talk to your doctor. https://www.mayoclinic.org/diseases-conditions/vulvodynia/symptoms-causes/syc-20353423#:~:text=Vulvodynia%20(vul%2Dvoe%2DDIN,lasts%20at%20least%20three%20months. Wish you good health!

Pain in vulva is not caused by a discharge, Pl have a repeat testing if you have no discharge, you can try Ibuprofen for a few days and if not better see a Gyn.