I've had my tubes tied over 3 years ago and my last period was super pain full and super red and had clots and the size of half dollars (about 2 weeks ago). I was awaken this morning with sharp pains in my abdomen and lower back a blinding headache and dizzyness. Should I go to ER? Or wait until Monday when Dr is in?

Please go to the ER. If it is an ectopic it could be life threatening if it ruptures. However, it could be several other conditions as well.