Oh NO, Michelle!! Oh, God, I'm so sorry, girl. Well, there must have been a reason. I don't know your spiritual beliefs but I think the following thought might apply here.
God has only three answers: * Yes * Yes but not now, and * No I have something better in mind.
I'm sure that this is just a "Yes but not now" and when it's meant to happen it will. You're young and strong and healthy and when it's time you'll have a happy, healthy baby. Have faith!