I’ve been regular, never taken birth control and since starting TTC around December with my husband, my December cycle was late by more than 10 days. I finally got my period in the first week of January and now here it is the third week and my period has started again. My cycles are usually never this short and at first I thought it was implantation bleeding with light spotting but now AF is full force. Anyone else have cycle irregularities after being regular for so long? Should I contact my OBGYN?