K.L.
I only know of 2 people that had children when they were 40 or older and they both had difficukt pregnancies and their children have down syndrome and they are not even related to each other. I have heard through doctors that the older you are when you ahve your children the higher risk it is for them to have down syndrome or soem other serious health problems, but i hope that is not the case for you. I don't know about the mirena iud, but i am on the shot and i have been ofr about 4 years now and i have been very successful in not getting pregnant so far. I didn't lose my hair or get fat like everyone says it will do to you.