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http://pregnancy.about.com/cs/pregna...blpregcalc.htm
Due Date 5/11/2009 Conception 8/18/2008
Pregnancy Test 9/1/2008 1st Heartbeat 9/15/2008
Quickening 12/8/2008 Viability 1/19/2009
Week 1 8/11/2008 Week 22 1/5/2009
Week 2 8/18/2008 Week 23 1/12/2009
Week 3 8/25/2008 Week 24 1/19/2009
Week 4 9/1/2008 Week 25 1/26/2009
Week 5 9/8/2008 Week 26 2/2/2009
Week 6 9/15/2008 Week 27 2/9/2009
Week 7 9/22/2008 Week 28 2/16/2009
Week 8 9/29/2008 Week 29 2/23/2009
Week 9 10/6/2008 Week 30 3/2/2009
Week 10 10/13/2008 Week 31 3/9/2009
Week 11 10/20/2008 Week 32 3/16/2009
Week 12 10/27/2008 Week 33 3/23/2009
Week 13 11/3/2008 Week 34 3/30/2009
Week 14 11/10/2008 Week 35 4/6/2009
Week 15 11/17/2008 Week 36 4/13/2009
Week 16 11/24/2008 Week 37 4/20/2009
Week 17 12/1/2008 Week 38 4/27/2009
Week 18 12/8/2008 Week 39 5/4/2009
Week 19 12/15/2008 Week 40 5/11/2009
Week 20 12/22/2008 Week 41 5/18/2009
Week 21 12/29/2008 Week 42 5/25/2009