hello, chocolate cyst
can cause infertility
in 30 - 40% females with this disease. actually it interferes with tubal motility and function, it may inhibit ovulation and ovum pick up by the tubal ends. so yes it is related with infertility and period irregularities . doctor gave you these drug to reduce the size chocolate cyst. other drugs are there to reduce reduce your blood cholesterol
as the former is prone to cause weight gain(side effect) and the last one is vitamin and other essential nutrients important for you and your lovely to be baby. hope i satisfy your queries . have a healthy life ahead.