Can you take Tylenol pm and sertraline?

I have trouble sleeping while taking Strattera, so I called my Doc and asked if I could take a Tylenol PM. She said yes, and I have been taking one a night and it works like a charm. I have only been on strattera for a week. I do take my strattera before I go to bed so that could be the problem. I started strattera one other time and took the first pill in the early afternoon and I had such head sensations that I quit it right away. Since then I realized I would probably have some side effects and am giving it another try. No head sensations if I take it in the evening. It seems to be starting to work.