I am exhausted. I have 9 month old DT's who don't sleep through the night and I think I am really sleep deprived. It's making me so bad tempered and miserable and puting a terrible strain on my relationship with my DP. Friends with babies told me I would get used to the disturbed nights, but I'm not. I find it almost impossible to sleep during the day. I am beginning to think I am doing something wrong with the twins that they are not sleeping through the night. Guess I am looking for some advice or even just some reassurance. Is it normal to feel this tired and low?