I have my tubes tied, it s been about 6 1/2 years. With that being said, my last period was March 19th. I have taken about 10 pregnancy tests all came back negative. Last week I took a blood test and it came back negative. Friday I started spotting and had extremely light bleeding, that only shows when I wipe and sometimes not even then. I have some light cramping and pressure in my stomache, lower back pain, nausea, and my hips hurt. I did set up an appt for the ob/gyn for next wednesday. In the mean time, do you have any idea what could be causing me to be so late, and having these symptoms? I am usually on a 28 day cycle with heavy periods!