With my last pregnancy I swam, a lot! It was awesome because I felt so light I don't know what I will do this time. I have been walking DS2 to and from school but it's really only 15-20mins each way. So far though, it's all I can handle and sometimes I can't even handle that. When it cools down it will be better for walks. Then when it snows we will go to the gym more often.
I looooved swimming when I was pregnant with DD. I wish their was a salt water pool around here because the chlorine makes me so sick with migraines and fatigue