Could I possibly be pregnant?

So for the past 2weeks I've been feeling extremely tired and very moody and my breasts are sore and I'm always thirsty. I just can't quench my thirst I drink to the point where I get so full but I'm still thirsty. My period isn't due for another 10 days so I'm really confused about this, usually I get symptoms a few days before my period starts, but only tender breasts and slight cramping, there is a good possibility that I could be pregnant but what do you think?