Morning sickness with BFN

Margaret
Per Glow, I'm due for AF on Saturday the 7th. Last month she was abnormal, very short and just spotting the whole time. DH and I baby danced everyday of my ovulation in January, and ever since I've been feeling different. My breast have been super sore (it hurts to lay on my stomach, it even hurts to take off my bra, for DH to touch them,etc) I always have breast tenderness right before my period but this is so much worse. The past couple of days I've been nauseous and actually just got sick this morning. I took a HPT this morning and it was negative. We've been TTC for about 8 months now with no luck. I don't want to get my hopes up to be disappointed again. Could it be???