stupid me

Yesterday, after dinner, mil passed me a bottle of "pao sam" for us in order to avoid sleepiness during working hours. But stupid me, i took one piece as i like pao sam a lot and without realising it's already 9pm. So the after effect, i stared at the ceiling of the room until i have no idea what time. All i know now, my head is heavy today and i'm having terrible headache again. Couldn't sleep in the car on the way to work due to traffic jam & hubby stepped on the brake so often until we reached office. Help me...