Hi I Am 32 Yrs Old, Past 4 Months My

Hi I am 32 yrs old, past 4 months my periods were delayed by 4 days each month so they shifter from 8th to 13th to 19th to 23rd of each month this month It has been delay more the 4 days and have still not got them . I am going through extreme stress since my mother was admitted in hospital and has been keeping unwell since then ..... In December 1st week I experience extreme fatigue for 2 days but got my periods on 23rd .... what could be the reason for delay and what should I do to get my periods regulated? Are my symptoms premenopause symptoms or just stress has delayed my periods ?