Thanks for your query.Based on the facts that you have posted it appears that you have undergone surgery for priapism
30 days back and getting pain in penis and the size of the penis has not reduced to normal.\
This is most likely to be due to issue reaction to a foreign body (stent
) and localised inflammation around the stent.
It takes 3-4 months to get it resolved.
Take anti inflammatory medication like Diclofenac
It will get cured within 3-4weeks .