Sometimes I feel pain in corpora cavernosum of my penis after ejaculation. Pain lasts for3-4minutes. I am unmarried. Is it any problem and what to do?

Priapism. When normal erection occurs, the sides and the bottom of the penis, the corpora cavernosa and the corpus spongiosum, respectively, become engorged with blood so that the penis enlarges, hardens, and assumes an erect position. The major symptom of priapism is pain and tenderness in the enlarged portions. There may be a short period during the onset when pleasurable sensations are felt.