I am a very small young lady, originally I weigh about 105 lbs and haven't gained much. I am about 6 weeks pregnant and am an exercise, health freak. Can anyone suggest which exercises I could do that won't strain me or the baby. I like to dance, I do zumba regularly and lift 10lb weights to tone my arms and do crunches and push ups as well as squats. Can I keep doing these, or do I have to find something else that will keep me healthy?