Hi, I had protected sex with my friend on September 11th. About 20-30 mins later we did it again but it was unprotected. I was concerned about sperm from the first ejaculation still being in his penis so I took Postinor 2 on September 12th at about 9 am (about 29 hours after intercourse). So far I've had cramping everyday, frequent urination (I drink a lot of water so this could be a reason). I've been feeling lightheaded and had a few headaches. My breasts have also become a bit sore. I am concerned because I was fertile when we had sex and an app I use told me that I may have been ovulating on September 12 or the day after. I'm worried because I'm not sure if the pill would have worked if I did ovulate on September 12. I did not have any bleeding as expected from taking the pill. I am still cramping everyday from when I took the pill. My period is due on 27th September. I know not to expect it yet as a result of taking the pill but I would like to know, with all the cramping I've been feeling, is it possible that I'm pregnant?