I have a vaginal discharge even though I have not ben sexually active for 8yrs. My ex partner gave me an std back then but I was treated. It is not allm the time but every frw days I will have a very dark green or almost black small amt. of discharge....it has no smell. I went to my gyno on this past Tuesday but al said was use dove soap eather than liqud perfumed one I use h told me that my uterine wall had thinned and told me to use replens to moisturize it . I will get th redults from my chek-up in a wk oe so Could thse dympoms be anything serious?