Rough night

And it has me confused. I am a great sleeper. Always have been. Last night I was really tired and kept dozing off. This was around 8-9 PM. Finally fell asleep around 10 PM once I knew all the kids were out for the night. My oldest likes to read in bed before she sleeps. Well once my toddler woke up around midnight I couldn't get comfortable. I kept waking up, tossing and turning and having a little anxiety. I kept thinking about smoking and was getting mad that it was keeping me from sleep. Is it normal to be restless and not be able to rest? Not mention be sleepy all day? I am fighting hard to not smoke. I was so tempted last night after dropping my daughter off at dance to pick up a pack on the way home. But I didn't. I'm iwaiting for the heaviness in my chest to go away. I've thought about making an appt to get a check up and go over everything with a fine tooth comb. Maybe that will put my mind at ease. Who knows. lol