Late on my cycle 11 daya, tender breast. preganacy test negative. why?

Missed ovulation: You likely had a normal, common occurrence known as an anovulatory cycle (your ovary didn't release an egg this month). If you are regularly using birth control, you should call your ob/gyn for an in-office pregnancy test. If still negative, they will likely give you a short course of Progesterone to induce your period and "reset" your cycle.