I have those pain for 2 weeks. I always do masturbation and the pain just started with one masturbation. Do I have prostatitis?

Those pain can be prostatitis symptoms. 
It is possible that prostatitis bring these pains:

- in the urethra
- with urinating
- with ejaculating
- around perineum area
- at lower back
- at lower abdomen
- at legs
- at groins
- at penis
- at testis
- at the rectum area
- at spermatic cord
To have your condition diagnosed, you need to visit local doctor and do some tests. To cure prostatitis, traditional Chinese medicine Diuretic and Anti-inflammatory Pill can be good.                                    
Released in 2011-11-02 15:13:35