So for the past three months, my periods have been a week late (and normally, the start EVERY 28 days) and they've been short (about a day and a half, and light). I haven't started and should have on dec.23, i have mild cramps that come and go along with sharp pains in my abdomen and pelvic area & sore breasts. I've taken several hpts and they've all been negative..i'm scheduled for an ultrasound in january. I was just wondering if anyone has gone through anything similar to what i'm going through and what was causing it. Thanks!!