Doctor Stephen, Thank you for your time! My husband is suffing from a concussion , he fell hitting the back of his head Sunday today is Tues He is still hurting so bad he is not getting out of bed for 95% of the time. He is drinking milk, juice and water, but won t eat, his head hurts so bad he just lays back down. How long will this headache last? Or when do I need to demand we go to the hospital?