Have been on metform for about 2 wks now.. Only an upset tummy...well CD 4 today but ever since I started my period I've had this "fishy" smell only when I go to the bathroom I can smell it..it's not real strong but I noticed and I have never had a problem with a smell like that down there..has this happened to anyone else? Should I be concerned?

Also my pills in the bottle smell fishy as well. Please insights would easy my mind.