Hi C.,
Since this is a new problem you need to review what is happening in your life that is contributing to the problem. Are you waking up concerned about finances or relationship issues? Has their been a change in your health or your sleep schedule? Is the insomnia related to your menstrual cycle? Are you having pain? What about your sleep environment? Has that changed? Too hot? Too cold? Are you waking to void and then having trouble going back? Is there anything else you are worried about?
There are as many causes for insomnia as their are people who have it. It may take some detective work, but if you can identify the problem, you can take steps to alleviate it. Sometimes it is as simple as writing down your concerns so that you feel like you can free yourself from them and the list will be there for you in the morning.
Obviously, implement the usual. Excercise, but not within several hours of bedtime. Never take work to bed with you. Cut out caffeine especially after 2-3PM. Don't use alcohol to relax. It will help you fall asleep, but you will wake later with the blood sugar changes and be unable to go back to sleep.
Are you sure you are not suffering some postpartum depression? We could absolutely adore our children and still suffer depression due to the major life changes parenting brings.
At this point you simply need a good nights sleep. It would be ok to use a medication for a couple of nights to reestablish a sleep pattern. Some people have good luck with Tylenol PM, for others one of the hypnotics works well. (Ambien, etc.) for others, especially if there is some depression involved, an SSRI anti-depressant taken at bedtime can aide sleep. (Trazadone is frequently used for this purpose) I would stay away from anti-anxiety medications in the benzodiazepam category. (Ativan, Valium, Xanax, Klonipin) They are effective, but quite addictive and can cause rebound anxiety and a need for more. If you do need a benzo, I would recommend Klonopin, it's longer half-life leads to less rebound, but, it is addictive nontheless.
Obviously, many of the drugs I mentioned need a Physicians order so they are mentioned simply as informative, so that you can have an educated discussion with your doctor if you need to go that way.
I hope you resolve this issue soon, although we all suffer from it from time to time, insomnia is miserable. And remember, even if you don't sleep, If you are lying quietly in the bed without extra stimulation, you ARE resting. Sometimes we get so anxious about not sleeping, our anxiety contributes to our inability to rest. Don't worry, you will sleep again. Best Wishes and God Bless.
J. L.