I just recently got the shot 4 days into my last period, and was told to wait 7 days before having sex without a condom. But... my boyfriend and I had unprotected sex day 5 of 7 (stupid I know). i ended up taking Ella about and hour after. I know I was not fertile at the time because my cycles are normally 35 days and it was only day 9. My breasts have been sore for the past week (which it normal for me) but the last two days iv been experiencing some spotting which is not something that's normal for me. My period was due today, but nothing yet and I don't know if I should be worried or not.