So sorry about your dad and all the stress you're going through.

Yes, check with your doctor. I take lamictal, and it hasn't done anything for sleep. Trazodone works well though. You can ask your doctor about it.

I would advise against getting an over the counter sleep aid. You can get them without a prescription, but some of them are way too strong. I took one once and I was groggy and falling asleep all the next day.