I got back from a wonderful holiday in the States last Saturday and thought I'd beaten the jet lag as I slept fine - and at normal times - Saturday, Sunday and Monday night. But I have not been able to sleep since then. I can't get to sleep until 3 or 4 in the morning and am knackered all day, but then still can't sleep again at night. Everything I read tells me that I should be feeling great and full of energy by now - 17 weeks - but I feel dreadful. There's lots of references to sleep problems in the first and last trimesters, but everything seems to indicate that I should be sleeping well in the second. Is this just delayed jetlag, or have others had sleep problems in the second trimester???