Hi welcome to Health care magic forum .
Thanks for asking a question to H.C.M.F.
You had a cyst
on the epididimis of around 3 cm size. It has continuous dull pain, especially in movement. Pain is horrible and vomiting
feeling after sex.
The cyst appears to be attached to the epidedymus, and the pull is felt upto the abdomen through the cord. Sex is expected to be vigorous so it shows more pull and nausea
As it appears to be fixed, better consult a surgeon for diagnosis and treatment. You may need to have surgery for pain relief.
Wishing for a quick and complete recovery.