My ob attributes this to all the stretching and also the fact that the ovaries are working overtime in the first part of the pregnancy producing hormones to support the pregnancy. All very normal, although it is quite painful at times and at 11 weeks tomorrow I am still getting pains here and there which completely freak me out (I miscarried with my first pregnancy). I just keep reminding myself of everything that is going on down there and thinking "it's all good".

Good luck