Doctor, please help me. sometime i've mens twice a month, sometime once in two months. is there any possibilities of deaseas in my body?

Irregular period: Schedule an appointment with your doctor, irregular menstruation could indicate something in your body, and sometimes it is hormone imbalance.

Possiblity: Having multiple sexual partners put you at risk of acquiring sexually transmitted diseases, including hiv, herpes, chlamydia, gonorrhea, hepatitis, syphilis; you can decrease the risk by either being abstinant, or use barrier protection during sexual encounters, the best way to know if you have any disease is to have yourself checked by a doctor.