Pregnancy symptoms?

My period is due the 4th Feb, I have sore nipples and my boobs feel alittle tender, I have cramping and tiny pelvic pains, I don't know if that's just because I'm due on, but Iv been waking up in the middle of the night for the past couple of nights sweating, plus when I eat oranges and blackberries they taste abit metallic, I'm trying to hold of doing a test because I don't want to be dissapointed, but could I be pregnant? Are these pregnancy signs?