I Am Having Light Green Vaginal Discharge There Are Chunks

I am having light green vaginal discharge there are chunks in it as well. It does not have an odor but there is a little bit of burning and some slight bleeding but I don't believe it is spotting, it's painful when I clean it down there as if I had a cutt. I just went and got checked for STDs 3 days ago and it all came back negative. Could this be a yeast infection?