Can bed rest prevent a miscarriage
There are many different causes of miscarriage. Bed rest might help prevent some miscarriages but probably not many. Many miscarriages that happen early on are for reasons that would make that fetus or that pregnancy incompatible with life. Often times early miscarriage are caused by a flaw that happened with the egg in the first few days when it was dividing. Most miscarriage are not caused by something that mom did or didn't do and most of the time they can not be prevented. In some cases bed rest can help and your doctor will evaluate you and determine what course of treatment they think is best.
The best thing you can do to prevent a possible miscarriage is be as healthy as you can be before you get pregnant. Eat right, take your vitamins, exercise, etc. But know that even if you do everything right miscarriage is still possible.