After taking megestrol I bled daily for wks. Is this a normal side effect?

Progestin. Breakthrough bleeding can be a side effect of Progesterone based medications such as megestrol (progestin) & will subside after cessation of therapy. If the bleeding is protracted your doctor may prescribe another medication to help stop the bleeding. Consult your doctor or gynecologist to make sure the bleeding was not caused by an underlying gynecological pathology.
Normal . It is a Progesterone medication that thickens the lining of the uterus. When you stop it, you can have withdrawal bleeding.