I am a 14 year old teenage girl, who is underweight. Height:5 Feet 5 inches and weight is 46 kg. I have been facing stomach ache since my childhood, a very severe one. So severe that I always had to be taken to the hospital in emergency. When I was small I did thumb sucking and nail biting. So my parents always thought that this pain is because of germs that I take in through these bad habits. But it has been up to 6 years now , and I haven't engaged myself in any bad habit. Yet I still have pain. Doctors have done ultrasounds, blood tests, CT Scan, stool tests, LFT, urine tests... but all of my reports are fine. They don't seem to find out the cause of it. The pain is like, twists and turns in my belly, literally very swear, that can make me scream in pain. yes I have consistent constipation on extreme and face hematochezia since the past couple of months. And so, have developd anal fissures also... that are painful. First, I want to find out the root cause of such a stomach ache. Secondly, sir/madam... lately, from a year I have had constant headache, that doesn't go away at all. It just stays in place. Yes I admit I have a bit tight schedule, I sleep a little less and eat less and speak less and use laptop a a lot. This headache doesn't go away with painkillers. And distracts me from stuff. What to do for this? If you have any medicine that can work, that you advise (except antidepressants, as they don't work at all) I could take that. Just need an advise on my daily schedule, and diet chart. Sir/madam, third thing, whenever I am stressed, I feel a sudden sharp pain in my chest... it’s in the middle more like in the chest bone. X rays have been fine.. and there has not been any major injury there that could cause the pain but I assume whenever I am stressed which I usually am... and it gets over me, or I take it to my nerves, then I face this sharp acute pain just left to my chest bone. Why does it happen? And how to prevent it?