how is this even possible???

Amber
I am only 24 (almost 25) I live a healthy life style eat the correct food don't drink or smoke? I get good sleep? I exercise, my cycles are always like clockwork, I had sooo much sex befor during after my
Ovulation time, my husband is extremely fertile? I took folic acid and vitiamins to help? I managed my cycle everyday ect Yet almost 4 months of trying nothing and .. my period arrived today?  WHAT THE F*** is going on?? How could this be possible??????