Of course is nt ur fault lah… I had insomnia even before pregnancy and sometimes during pregnancy but didn’t affect my babies. Few reasons why your baby not sleeping well: wants to be hugged to sleep, colic, hungry, too hot or too cold or just simply they need time to adjust to the outside world. When is day time, let natural sunlight in and expose to light and noise. When is evening and night time, dim the lights and switch on some white noise or lullaby.