Hi. I am a 39 yr old mom of two boys, 10 and 13, and have been married to my sweed dh for 21 years.
My second pregnancy included a low lying placenta. When I spotted, I was put on bedrest. I gave birth one month early via emergency c section after my placenta abrupted. Daniel and I were 100% perfect, and went home on day three like any other c section. My point is: When the doc puts you on bedrest, you do it. I went to the doc for a check up, and just exerted myself too much, and boom, there was Daniel one month early. He was high and breech. It was definitely a low lying placenta problem.
You'll be fine if you listen to your doctor and those wonderful nurses.