Am i pregnant or not???

For the past week I haven't been myself. I've been feeling sick but never pucked, always hungry and never seem full. I also only gained about 3 pounds. I don't know if I'm pregnant. My period should be soon, but its concerning to me. I mean I look like I might be but how do I actually know. I am waiting to see if I get my period or not. Do u think that's too long to wait. Advised is very much needed and will be greatly appreciated!!! :-) :-) :-) :-)