Fallen down some steps v. quickly, and landed on my back (don't know how!!) am 20 weeks and midwife said as long as I can feel baby move and no bleeding - yes I can feel the baby and no blood - all is ok. Why did she ask, though if I was Rhesus Positive or Negative?. And could I have injured the baby? I'm worried now. Have scan next week. Will it be ok do you think?