am i pregnant ??

I'm new to this so don't know were to post just looking for some advice .. im 19 and this is our first month trying iv been with my partner 3 years we had unprotected sex on Sat 14th of October ovulation was on the Monday.. iv been feeling really of this week .. backache , severe pelvic cramps yesterday , headaches .. always hungry and wanting curry .. and have tingly nipples (Tmi) and am having white discharge with no smell that i dont usually get..i seem to be tired all the time as well etc all pms symptoms that I don't usually get .. my period is due next Wednesday.. could I be pregnant ?? ino it's early .. thanks xx