I too suffered a lot of insomnia and poor sleep for weeks after the bomb. I would wake up at the oddest hours -- I would go out in the wee hours of the morning just walking because I couldn't go back to sleep. It wasn't until we separated and I began getting somewhat accustomed to this distance did my sleep patterns begin to return to "normal". I also began to occasionally take some over-the-counter Melatonin to help with the quality of my sleep (it would make me feel too drowsy some mornings because of it however. So I can't take it very often.)
But it was in the weeks leading up to the bomb that I should have paid so much more attention to the intensity and nature of the dreams I was having. I woke up one night maybe a month before the bomb in a cold sweat, crying. I went back to sleep eventually but it haunted me the rest of the day. In my dream I went and confronted a "nebulous" (in a dream sort of way, if you know what I mean) person in their home because my W was for some reason hiding from me there. This guy was basically telling me to get lost and that my W was sharing his bed now. Until that dream I had never had any reason to ever doubt my wife, and so I just thought how lucky I was it was "only a dream."
Later that morning I mentioned to W that I had not gotten a good night's sleep because of bad dreams. She asked me what about, and I then told her that I had been particulaly upset with this dream concerning her having an A with someone else. I now think back on that conversation with my W, and I remark on how quiet she was with me upon hearing me relate this to her. In hindsight, I should have been worried that W did not at that point attempt to console me, or state to me that I had nothing to worry about with regards to her love for me, as one might normally expect.
No, she did not really say anything -- except maybe to say she hoped I would get a better night's sleep -- and I realize now that her reaction should have been a warning to me, not to mention the dream itself.