To find out if it is fully charged or not, unlock your iPod and look at the bar a the top when it is charging. Then look at the battery at the top right hand corner of the iPod screen.
Bleeding Gums Stress can cause a reaction from bacteria inside of your mouth that make your gums bleed. Blood happens to tastes like metal, and can be tasted even if the amount of blood is barely perceptible. It's possible that during anxiety attacks and stress, you're experiencing a minor gum bleed.
The second thing it could be is if your dental fillings are deteriorating it can give a metallic taste. Over time everything breaks down so the old silver mercury fillings can corrode or break down where they seal against the tooth and this will let in bacteria into the tooth so that decay can produce a bad taste too.