Light green discharge please please answer !?

I had unprotected on the 23rd of april & about 3 days ago i noticed i had a light green discharge it didnt smell itch or burn so the next morninq i douche & when i did it started to burn a lil & yesterday i took bath & attemtped to qet ALL out & it came back today im qettinq checked friday but i know thats a bad sign but i want to know if its a std whatis it ? is it cureable & if its a infection the same thinq thank you