Please help!!! so confused!

So the past few days I've been feeling strange....it's hard to find another word to describe it really just like a strange flutter feeling in my pelvic area, metallic tastes in my mouth and feeling and being sick on occasions. My period isn't due until Friday 21/10 so surely it'd be too early to be experiencing this? I never have any of these symptoms normally around the time AF is due so am really confused. Please help don't want to get my hopes up for it to be just another negative