I didn't run during pregnancy. Well, not really. I had a trail race, my second race ever, the Skirt in the Dirt 5K planned, and it was three weeks after I took the pregnancy test. I didn't want to drop out because I wasn't ready to tell my friends I was pregnant. I was fortunate in that I didn't have morning sickness, but the run was just awful. Sore everywhere, throbbing ovary, and after the race, that was it.
During the first two trimesters pregnancy I lifted weights, which I'd been doing for years so I was able to do them safely, and worked out on the elliptical. I also did yoga and Pilates. By the third trimester I was feeling too stretchy to feel like I could control the weights, and my workout clothes weren't fitting, so I took up swimming until my maternity swimsuit disintegrated when I was 34 weeks along. Then I walked, usually about 3 miles a day, including the day I went into labor.
So, no running. I thought I'd have an easy return to my post-pregnancy body, but then labor turned into a prolonged second stage culminating in forceps, and I had severe pelvic floor laxity and all the fun that goes with that Starting at about six weeks postpartum, I used the Hab-It PT routine.
This was hard for me, because I've been lucky in that I've always had relatively good health, barring the occasional injury here and there. I was finding it challenging to carry the baby in his carseat. It helped mentally for me to think of recovering from childbirth as if it were recovering from a major injury. If someone had taken a baseball bat to my pelvis, I wouldn't be berating myself for not healing quickly.
Anyhow, with the help of the DVD, and a rather intense commitment to core training, I managed to retrain my deep core muscles. Five months after having the baby, I felt up to daily 3 mile stroller walks; six months post-partum I started gently with a couch-to-5K program. Kiddo is now fourteen months old, weaned, and things are much improved, and still getting better. I'm in a position where I can think about a half marathon, and last summer, that seemed to be impossible.
Odd side effect -- all that hip and core strength changed my stride a little. I used to have to run in motion control shoes and now I seem to be fine in neutral trainers.
Would I run during pregnancy? I honestly am not sure. Maybe a little in the first trimester. But I think I'm living proof that one can decide not to run, and take it very slowly, and get back to it.