miscarriage???

6wks 2day and yesterday when I went pee I had stretchy clear discharge with light pink in it. midwife said it's nothing to worry about, it's my placenta burrowing in my uterus. I'm on 400mg of progesterone. haven't seen the pink again at all since last night. no cramping either. has any1 had this happen and went on with a safe healthy 9months?