I am 21 years old women I have irregular periods and for past 3 months their is no sign of period so I take ovacare forte pills for past 2 weeks and their is no improvement I am not in relationship please advice me to get regular periods?

Usually take BCPs. If you are having irregular periods that is usually addressed by putting you on birth control pills. Speak to your OB/GYN.
Are you certain. That you are not pregnant? If you have had 3 consecutive negative pregnancy tests, each taken 1 week apart, then you need to get yourself to a healthcare provider to properly diagnose and treat your amenorrhea. There are certain medical conditions that can cause amenorrhea, including malnutrition, anemia, diabetes, polycystic ovarian syndrome, anorexia, conversion disorders.