Breaking the news

So my fiancée and I just found out last Friday that we are expecting!!!! We have been TTC for over 6 months, now our wedding isn't until April of next year and my parents just moved to Arizona about two weeks ago, I have no intentions of telling them until after I reach 12 weeks and I'm almost 5 weeks along now, I'm just nervous to tell them because my due date is in December and I don't think they are going to be very happy about it, what are your opinions? Is there a cute way that I can break it to them? Or should I just be forward and blunt about it?