I walked everyday to get my son from school but that is still just a small part of the day and we are only two blocks away lol! But it still kept me in shape...that and chugging down easily 1 gallon of water a day
I wouldn't be concerned, I'm 29 weeks, gained only 8 pounds and look like I'm 4 months along. If your doctor hasn't expressed any concerns, you're good to go :)
Nope, if the doctor says you and baby are okay, don't sweat it! Some girls balloon out toward the end of pregnancy and some girls don't get big at all!