Talk to Gynecologist on Period Problem

I had my period on 26th February and missed my periods in the month of March. I got them on 26th April. Now again I haven't gotten my periods and it's 19th June now. My cycle is usually of 35+ days but I haven't missed whole months like this. I have been really stressed in the last months. Kindly suggest me what to do. And what could be the reasons?