Hi, thanks for the query to H.C.M. Forum.
that too on the left side, radiating to left side.
Age is around 30-40 years or more is a clear sign of some heart disease
Since you have checked for every thing. Presumed that spleen and pancreas
are normal in various tests.
Here I would like to say one thing that every pain on the left side is not a heart pain because there are many other reasons for this pain as
May be muscular pain
of the left side.
May be pain in ribs or pleura , or in the left lung.
In your query you mentioned that there is extreme fatigue , the cause in your case may be due to "ANXIETY" because regular pain on the left side.
If your's pain is more than 30 seconds in chest than think about heart pain.
For nodule over clavicle
, get in X ray and ct scan of that part, get in blood examination .
Physical examination by a senior clinician is must.
Good luck. Dr. HET