I was hoping for some wisdome from the "been there" parents. I have soon to be 1 year old twin boys. They have been sleeping through the night great for about 2 months or so (after some tough love). Since Thursday, Peter has been waking up at random points during the night HYSTERICAL! I have never seen him as upset as he has been so my reaction is to think something is wrong. But...he is calm when with me. Could he be affraid of the dark? Could teeth cause this? or is it the so called "separation anxiety?" Please help and share your wisdom, my husband and I are first time parents and don't want to teach them bad habits...