PLZ HELP ANSWER DONT KNOW WHATS GOING ON?

Ok i dont know whats going on my not due for my period for 2wks and my last period was weird not my usual......i have very sensitive nipples my boobs are heavy and just sore, im peeing more but not overly, sometimes i feel rushes of nausea which go away wiithin a few seconds, i have increased cm, tired alot, moody, headaches, toothaches, bloating, oh and lower backache i mean bad backache, and light cramps every now and than........ could anyone have any ideas??? Could this just be really early pms????? Plz help me out