Before I got pregnant I was around 106lbs. I am now 33 weeks and weight 127lbs. I was gaining a pound every week up until now.. I went to my OB 4 weeks ago and weighed 125lbs and when I went today I noticed I had gained 2lbs when I was usually gaining like 4 (1 a week) is there a time in pregnancy when your weight gain starts slowing down? Should I be worried?