Hi--I think you're right for being concerned. I do not know what the doctor found on bimanual examination of your pelvic area, feeling your uterus and ovaries by the doctor. The discharge sounds like mucus and as if it was originally infected. I do not know if you could possibly be pregnant.The pain on the right side could be an abscess in the tube or ovary on that side. I think you should have a followup recheck by your doctor and, to make sure, do one of the over the counter pregnancy tests now if that's a possibility. If the pain gets suddenly worse, do not hesitate but go directly to the emergency.
Hope this helps you.