I had my implanon removed on september 11. My husband and I have been having unprotected sex almost everyday since then. In the past week I have been having nausea and my period has not come yet. I took a pregnancy test on sep 26 and it was negative. Today I have been having cramps like a period but no bleeding and it is the 29th. I had these same cramps in early pregnancy with my other two children. Has anyone had the same experience and how long after the cramping started did you have a BP?