Hello, I'm so confused. I am very regular on my periods(every 28 days), and have never been late unless I was prego. I have 4 children,am 30 years old and just had a baby 10 months ago. My husband and I had unprotected sex on may 19, and then on may 22 I got the morning after pill (plan b one step). I was supposed to start my period on may 25th, and Havent started since. I'm 10 days LATE and have taken 3 dollar tree prego tests and one ept a few days back. I just don't understand why I haven't started and I know the morning after pill can make you one week late but i'm more late now, and even when I have taken plan b in the past, its never done this. Anyone have any thoughts or suggestions or similar situation? please let me know. THANKS SO MUCH!