I just wanted to respond with my experience- I have a lap in April 20th and am just now finally feeling better from the surgery. I had a sore muscle in my abdomen that kept me from doing much of anything- yoga, lifting, coughing, it all hurt. I am now on Lupron Depot for at least three months but most likely will be told tomorrow that it will be six months. I have had slight twinges of pain that I relate to endo cyst on my ovaries. Just like you, I am wondering if it is possible for it to grow back that quick. What is your next plan of action? I wish you the best of luck, I know how much endo hurts.