I have been taking 10 units of Lupron for the past 11 days as a prep for IVF. I feel terrible! I have gained several pounds. I have been having stomach pain and burning as well as abdomial pain. Now I am having weakness and numbness in both of my legs. The pain and weakness started as soon as I took the first shot, but when I told the doctor, I was blown off. Now I am having trouble walking. At times my legs feel as though they have fogotten how to walk. I hope that I don't have to take this much longer.