Every pregnancy is different. My DIL had her first at 30 weeks gestation--premature rupture of membranes at 20 weeks, and she spent those 10 weeks in the hospital--but we all believe it was stress related, as her husband was serving in Iraq and she was finishing her degree. (baby and daddy both came through unscathed, thanks.)

Her second baby was born six months ago, full-term, at home, with no intervention (except a midwife). Totally different experience.

I wouldn't advise anyone to go all-out with the physical activity, but I also wouldn't walk around in fear of what you might "do" to cause preterm labor. If it's going to happen, it's going to happen. If you could "cause" labor by riding a bike, then every woman nearing the end of a long pregnancy would be getting on a bike to make it happen!!

I'd get another practitioner. That doctor is operating within the terms of his insurance policy.

Karen