unable to sleep after going off birth control pill?

Je

I went off birth control in July and for the past month have had a really hard time falling asleep. Even when I'm totally exhausted, I can lay awake for hours. Taking benedryl helps, but obviously it's not a long term solution. The most obvious cause seems like it would be going off the pill, but after semi-intense googling, I actually haven't found anything stating a connection between going off the pill and an inability to sleep. Any ideas?