Slight pain on left testacal what can i do to help pain go away?

Ibuprofen: You can take up to 800mg of ibuprofen, but if pain persists you need to see you doctor.

Check with urologist: Depends upon cause of pain. Hydrocele, varicocele or spermatocele could be corrected surgically if pain is longstanding. Torsion of appendix testis is self limiting & can be managed by over the counter pain meds. Mild epididymitis may require antibiotics. Suppotive underpants (not boxers) may help, as well as lying down. However, best to let urologist make determination.