I am a 28 year old female and have been suffering from a mild discomfort/pain under my right ribcage to the centre of my chest/behind my right breast radiating towards my back & sometimes slightly to my left that comes and goes all day every day for over 2 months now & am extremely anxious now to the cause. I have since August 2006 lost nearly 5 stone on the Cambridge diet & have been exercising regularly. I have stopped smoking 6 weeks ago & limit my alcohol intake. I have no other symtoms. I have been to my GP four times in these past 8-10 weeks they have examined my abdomen twice, checked my breasts for lumps & have also paid privately to have an abdominal ultrasound which showed nothing to be abnormal. I am now extremely anxious to what is causing this on & off pain my doctor has pescribed me some pills for acid in the stomach called Lansoprazole which I have been taking for 4 days but have not made any difference. I do not have a problem eating or drinking my toilet habits are normal I do not feel sick no blood present as far as I can see, I am paranoid that I have a cancer my doctor has also referred me to see the practice councellor as my anxieties have become so bad! Any help, information or advice to what the problem could be would be greatly appreciated.