Megestrol

I just finished chemo, the Dr. found a spot on my cat scan which he said could be the cancer or scar tissue, cyst, etc. Said that all his exams had been normal. My ca125 was 90 after the removal of the tumor. It then went to 24, 30, 36, 17 and the last reading was 8. He put me on Megestrol 160mg daily. Anyone know about it? I did have complications after the original diagnosis. Blood clots, they had to wait till they disolved, the one's on my lungs. Then I had a large blood clot in my leg and a small stroke and clots on my heart valves. So the operation was sooner than planned. The clots have since disolved. Also on Fragmin, as Cumadin (sp?) did not work. Really glad I am still alive.