Hi. Im worried there is something wrong with me. this all started a few years ago one afternoon I had this terrible pain in my stomach, like something had erupted or snapped! the following days I noticed that after a cigarette in a morning made me rush to the toilet with diarrhea. This does still happen now and again, I get that feeling in my stomach in a morning after a cigarette but its not always diarrhea. I just have that strong herge to go. Also I have headaches at the back of my head quite often. I also get slight twitches through out my body...ie temple twitch or twitches in my legs. also the soles of my feet tend to be really hot at night. I would say this all started when I split up with a long term girlfriend which messed with my head. And im am a pretty heavy smoker and drinker. I consume around 4 beers daily and more at weekends. I also worry and stress a lot and grind my teeth at night. hope you can help