i always have a headache?

anytime i hang out with my best friend! shes quite, so its not her, but when we hang out at her brothers. it's a little overly smokey there because there are always bong hits going down, but ive gotten used to it. light also bothers me. so does cigarette smoke. alot of times, none of the three are around i i still have one. its been like this for about three years.