Serious question I need help

Okay ladies, so I had a very normal menstrual cycle so far this month but yesterday night (19th day of cycle) and this morning (20th day of cycle) I am experiencing slight cramps and spotting. I went to my gyno last Friday she said my cervix looked healthy and everything was okay. I did not get a call stating that anything is out of the blue. Anyone know what the he'll could be going on.?