My 7 months baby fell from the bed yesterday on her back. I couldn't notice how she fell but we heard a sound and we ran to her only to find here lying on her back crying. The height of the bed is about 50 inch from the floor. She seems to be OK now playing but still I am very scared whether she might have internal injury. How to know whether she had any injury at home ?
Firstly, if you're really worried for any reason or even have a shadow of a doubt take her to a doctor.
Generally babies and toddlers aren't injured in falls as they have softer bones and don't tend to tense up while falling until they've experienced the pain of a few falls. Unless your baby is showing pain or a side effect from the fall such a losing consciousness, it's unlikely you have anything to worry about.
I have five children and you tend to become more relaxed and less worried unless you can see something is wrong or unusual (such as refusing food for more than 2 normal feeds) with the baby after a fall or bump. Babies and toddlers are extremely resilient.
Here is a good page about falls including warning signs to look out for: http://www.babycenter.com/0_falls_397.bc
Call 911 if your child experiences any of the following after a fall:
Take your child to the emergency room or talk to his doctor immediately if you notice any of the following:
Usually babies as more resistant to all kind of injuries as their bones are more flexible and less fragile than the adult ones. Also they regenerate faster as they are still developing and have a really young tissues.
But it's still better to go to doctor. You'll lose couple of hours but will be sure that everything is fine