please write and say "right at 12 weeks"!
the books seem to say it can commonly last for 16 weeks... and obviously some people have problems throughout pregnancy. i just want to hear it from my nesties 
TIA 
BFP#1 May 17, 2008
Surgery for ectopic pregnancy June 3, 2008
******
BFP #2 September 25, 2008
Baby boy born June 4, 2009 at 40 weeks
8 pounds 13 ounces and 23 inches
******
BFP #3 February 6, 2011
First U/S February 25, 2011 = TWINS!!!
Boy/girl twins born October 4, 2011

Re: when did your m/s go away???
Um...12 weeks...isn't that what you wanted to hear???
Mine did go away at 12 weeks but it came back for one more HORRIBLE day/night at 14 weeks....but I have been good to go ever since.
I hope yours goes away soon! Sorry...I know it sucks!!!
Mine started to ease with the help of acupuncture at about 9 weeks but I still had it until about 16 weeks when it went away totally.
Mine comes and goes. Weeks 6-8 were bad, then it lessened. It picked up at 11 weeks and 12 wasn't so bad. This week has been rough but it could be because of the killer headaches I've been getting.
Sorry if that isn't the answer you wanted to hear.
I wish I could say 12 weeks but mine stuck around daily until around week 18 and after that it popped up randomly right up until my c-section.
Kerri