Fiance and I had sex Dec. 9 . Thought I had ovulated on time the week before, but on Dec 10 I got that familiar ovulation pain. Took Plan b exactly 24hrs later. Within 15 minutes of taking the pill, the ovulation pains which usually lasts hours , completely stopped. I don't know if the egg was released or not . Then I read that the pill is completely ineffective for someone over 176lbs, which is me . It's bs that the packaging made no mention of the studies done that say its not effective. It has been over a week now. I have had headaches , pain in the ovary that was ovulating, slight cramps, very slight spotting. I was supposed to start yesterday , it's always the 16th, but nothing. My breasts are puffy, but they always puff up after ovualtion ,but no pain. I have taken 4 tests just to ease my mind, even though its too early. They were all negative. What is going on ? I have no way of knowing if the pill worked. How late does it make you when your cycle was already messed up ?