It was probably last month, the same weekday as today. Sometimes it will be 2 months ago and you will have to turn the calendar page back down to see it.
If the date is January 29, five weeks ago was Christmas (of last year).
May 1, 2008
Well today (14th November), you are 28 weeks and 1 day pregnant
Whatever day it was five weeks and five days ago. In this case, given today is Friday, it would have been Sunday.
24 weeks ago. 24 weeks, or or 5 1/2 months ago.
Five years earlier that the date in question. I leave the simple calculation to the student.
This depends on what today is. See the related link, "100 years ago today". To calculate late the date, subtract 100 from the current year, and use the same date. For example, of today were July 5, 2015, then 100 years ago would be July 5, 1915, since 2015 - 100 = 1915.
5 weeks ago
The question was asked on Wednesday the 19th of February 2014. The answer for that date would be Friday the 22nd of November 2013.
The question was asked on Thursday the 21st of August 2014, so the answer for that date would be Sunday the 13th of July 2014.
Because of the way that gestational ages are calculated, a pregnancy called "5 weeks gestational age" was conceived during sex that happened about three weeks ago, so you probably conceived around the first of March. That date makes sense with your best guess of your LMP date as well.
16 weeks and 5 days ago!!!
Adding 12 weeks, that is, 84 days, to September 5, 2011, gives November 28, 2011.