10 weeks, and now at 24 weeks it is STILL going strong!! That's even taking Maxalon at least 3-4 times a day.
I didn't get it with my first pregnancy, so I dodged a bullet there, but when I fell pregnant last year (which was a blighted ovum and emergency D&C at 15 weeks) I had MS up to the morning of the surgery.
Then with this pregnancy, after knowing how terrible MS was I had my fingers crossed that I wouldn't get it. But I did. Lol! I think I now have an appreciation how bad it can get, so I can sympathise with all the women now who get it.