What can cause green and white vaginal discharge? its itchy and it smells kind of like eggs. no chance of stds.

Bacterial vaginosis: Bacterial vaginosis or BV is caused by a bacteria called Gardnerella vaginalis. The bacteria is supposed to be there, but sometimes it gets overgrown. It is not a STI, but it is associated with sexual activity. Other causes can be from dousching. Some women it can come about because of a lack of vaginal lactobacilli.

Bacterial vaginosis?: The main cause of vaginal discharge with strong odor is bacterial vaginosis, an overgrwoth of mostly normal bacteria. However, the discharge in BV usually is white or gray, not colored. Despite "no chance" of STD, you might still need testing. For example, trichomonas could cause this and can show up years after catching it. Cervicitis is possible (some cases are due to STD, most are not).