I had unprotected sex the 3rd of October. He ejaculated inside me and I took plan b a few hours later. A week later, we had unprotected sex again (October 10th), and he ejaculated inside me. I didn't take plan b. My period isn't due until the 19th of October but I started bleeding on the 10th... Is there still a possibility of me being pregnant? I've been nauseous and extremely tired.