Question: I think I may have bacterial Vaginosis

I think I may have bacterial Vaginosis but am not sure. I recently had a new sexual partner, (always with protection apart from once for a few seconds) and also recently came off of my period once leaving a tampon in for too long overnight. Since these events I have noticed a thick white discharge which smells fishy and metallic accompanied by some itching around the vaginal entrance. I am using canesten for the itch but am not sure how to solve the rest of the problem. I am very prone to thrush but it’s never had an odour before and the discharge is thicker. I am also slightly concerned that it could be gonorrhea. I am currently traveling in Cambodia so it is difficult for me to have access to good health care.