Hi there I had sex on the 20th of may and took an emergency pill the next day, and on the 22nd, two days after i had unprotected sex and didnt use any pill. Am supposed to ovulate on the 26th of may. Now its ten days past my supposed ovulation and am having cramps, headaches, feel gassy, burping, feel tired and sleepy all day, fatigue and pressure in my lower abdomen. Could i be pregnant?