So I started my period October 14 and got the nexplanon implant october 18. I stopped the day after I got it and was sexually active. My obgyn told me and my mom it works immediately after it gets put in so I figured it would be okay if my boyfriend finished in me but I’m looking at articles saying I have to wait a week and I was not told that. Is there a possibility that I could be pregnant because I didn’t wait a full week?