Please can I have a little info :)

well I've been with my partner 2 and half years been trying to concieve for 2 years. I have a little girl who is 3 in July.. I have never been on contraception I go diagnosed with pcos and my periods was everywhere. Since September 2016 they have been spot on coming on the same time each month. I know I am defiantly ovulating as I have clear mucus around ovulation.. I am now 10DPO and had sensitive nipples for 2 weeks like sore when I touch them. I've done a test as I'm tired all the time and had cramping as if my period is going to arrive. I am due on the 10/11th Feb 2017.i did a test i can see a line but very very daint maybe it's too early ???