TMI HELP HELP HELP

Okay so it’s been months now I’ve had this problem I tried the Monistat 7 & my discharge was normal again for about 6 days then I had sex & It started slowly changing back To that green/yellow color

So now I’m suck I went to the OBGYN & I don’t have a STD

Do I take another Monistat?

Or do I need to go to a different doctor?