Ds is almost 5 (In May), he hasn't been taking naps since 3ish. He does fall asleep in the car or when he is REALLY tired sometimes though. Well he stayed the night at his grandparents last night. Stayed up later than usual. Came home around 11. We end up going back to my parents and I stayed watching a movie with my mom & ds and df left around 12. About 2:30 they come get me. Df say they were laying around watching TV and ds almost feel asleep. We go to the grocery store. Come home and turn on a movie for all 3 of us (Sundays are aways lazy lol) well around 4 DS goes to sleep. Unlike him , but we figured he wasn't into the movie. sleeps until 5:15. We were in the other room and we hear him get up and go into the bathroom. Daddy asks him if he wants to ride with him to the pet store he doesn't answer and walks back into our room where he was sleeping. AND GOES BACK TO SLEEP. This is where my mommy gut started to feel funny if you will lol. So df leaves and I call ds grandparents and jokingly ask if he hit his head. Well yes he did. I didn't expect that. He feel off the bed last night on to the carpeted floor. I called my mom and she said yeah I ran upstairs because I heard a thump. I am not mad at them things happen (although they should have told me), but do you think its related? He is getting over a cold & stayed up later than usual. Seemed fine this morning and all afternoon. Is he just actually tired or should I be worried?