Pregnant or not

I removed my nuva ring at the end of July , my periods have been consistent since , lasting around 5'days. My fertile window was 11/24-11/29 , AF is due 12/12 . A few days ago my breasts got sore which is normal for me before my period, normally my period start heavy and by day 5 its gone . Today I experienced done mild cramping more on the left side , weren't to the bathroom I had clear mucus with a tinge of pink, since I have seen nothing when using the bathroom , I feel drained today, I've had 2 neg tests a few days ago , could I be pregnant...