Nipple discharge

Julie

So, I have a green cloudy nipple discharge. It used to only be in my right nipple. Only comes out when expressed. I had it checked almost a year ago and nothing was wrong. My doc ordered an ultrasound but they didn't find anything. Now it's coming out of my left nipple as well. Again, only when expressed. There's no pain. My husband like to play with them and suck on them during sex and it'll come out and leave a horrible taste he says. He doesn't suck too hard or anything. I've looked it up and all says if there's no pain or blood and doesn't come out its own it's probably normal. I am not pregnant. I had a miscarriage oct 2015 and that's when it started. My left nipple has come clear-ish discharge as well. Comes out of 2-3 ducts, and what I say small amounts. Can anyone relate? Or have any input? Thanks in advance!