I am turning 30 this year and have not been able to fall pregnant. i have been on contraceptive for the past 8 years and have started taking folic acid. what could be the problem?

Infertility ?: At age 30, pregnancy should occur with unprotected intercourse over a one year interval, if exposure to viable semen is frequent. If pregnancy has not occurred during this interval, ask your gyn provider for a hysterosalpingogram (HSG), a simple x-ray exam which can indicate tubal blockage and frequently open the tubes, and obstructive tubal disease is the most common cause of infertility.