I am 23 old. after father death i got sever anxiety, my 5ecg chest xray, cbc all normal. i feel palpitations doc says due to anxiety. today 6am sleeping i felt stabbing pain b/w left nipple and armpit it wasn't so bad but i felt with breath last 5min?

Need to examine: It is not feasible to provide a meaningful opinion without taking additional history, physical examination and may be some tests. It would be prudent to see your doctor and discuss if you may be depressed. Counter-intuitive as it may seem, exercise may help. Start with low intensity exercise such as walking and gradually increase the intensity as tolerated. Wish you good health!