Congratulations and you are lucky! No reasons to feel guitly .. there is nothing in your hands to change .. Be happy, have faith and hope!
I was finally pregnant after years of trying, waiting and ivf (unexplained infertility), and then I lost my daughter in June 12th, 2013 at 24 weeks due to severe hellp (no identified cause for hellp, and I was in IC for 5 days ..really nobody sure if I will survive). I will try again next year, through the pain and emotions of ivf, and with my age going up to 39 + the risk for pre-e/ hellp again [if any of these will ever happen again...].
Stay positive! All my best thoughts with you! Take care of you, two!!