Hi, Am 32 Yrs Did Fertility Test The Dr Informed

Hi, Am 32 yrs did fertility test the dr informed me that my prolactin level is high, i was given bromergon, while taking this drug, i notice i haven't seen my period, my menstral cycle is 27 days, my last period was 10 june, the next period is suppose to be on 7july, i would like to know the cause.thanks.