I had sex on 1/1/2013, and I know for a fact he ejaculated insise of me. On 1/9/13 we had sex after we finish I felt hollowness in my stomach just really weird. I was ovulating from 1-1 to 1-6 per mydays app. I started bleeding a week early then my expected period on 1-17 to 1-20. It start normal then lighten up. I had pain in my lower back and butt for the first 2 days on and off. Now. Have nauseous spells without vomiting. My breast are tender and feel heavy and like a ring around my outer nipple and raised bumps. I have headaches on and off. And still have lower back butt and pelvic pain/light cramping off and on. I took a test on 1-24 and 1-25 both negative. I have never had breast to feel this way after a cycle. Just confused