irritated down there 🤦🏽‍♀️

So i just recently started taking birth control and lately i have noticed a problem with my vagina being really irritated. It doesn’t really itch and i don’t have an odor but when i pee it does burn and i’ve noticed i’m producing a lot more discharge than i normally do. I’m not a virgin but i haven’t had sex in almost a year and always used condoms plus i’ve been tested for any std’s and stuff like that and i’m perfectly clean. At first i assumed it was a yeast infection so that’s how i treated it but the problem is still happening months later. Im just really confused on what it could be and wonder if i should go to the doctor again cause i don’t want it to turn into something serious.