my chest pain when a deep breath or when i bend ?

Hi,
Welcome to the ehealthforum and I am glad to help you out.

The few possibilities which I can think of in your case is a muscle strain. This commonly occurs due to the overstretching of the muscle tissue resulting in the damage to the small blood vessels. Using some OTC painkiller for a few days, warm compresses and rest should help improve the symptoms.

An injury to the brachial plexus which is a bundle of the nerves and supplies the upper limb can cause these problems. This also needs to be ruled out. Sleeping on the arm can also present with similar complaints and thus needs to be avoided. I’ll suggest consulting a physician to confirm the diagnosis.

It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.