TTC 29YRS OLD NEVER BEEN PREGO

IM FEELING LOST N CONFUSED OK LAST MONTH I HAD A 26DAY CYCLE FOR THE FIRST TIME TODAY IS CD35 AND STILL NO SIGN OF PERIOD WHAT IS GOIN ON I DON'T EVEN KNO WHAT DAY MY PERIOD WAS SUPPOSE TO START THIS MONTH BUT I NEVER WENT TO CD35