I haven't had a period for almost three months what should i do i did 5 urine and blood test

Need more info: How old are you? Did you have sex since your last period? Were the urine and blood tests negative for pregnancy? Could you be entering menopause? Did you lose weight recently? Menstrual irregularities are not uncommon and anovulatory cycle is a common cause. If you miss more than two periods it would be time to see your doctor. If you do not wish to be pregnant, use contraception all the time. You may consider implanted contraceptive or an IUD. Consult this site for more information on this topic. http://www.nichd.nih.gov/health/topics/menstruation/conditioninfo/Pages/causes.aspx Practice safe sex.