so, I've been doing some research online and haven't quite found the answer that I've needed, so I was hoping someone would be able to help me out..

My fiance and i had unprotected sex a week after my period. I took plan b about 60 hrs later, and the day after I took the second pill we had sex once again (this time the condom broke). I called my doctor just in case I needed to take it again, and she told me that the EC would be in my system for up to 5 days and I shouldn't have to worry about becoming pregnant. A little less than a week later, I was spotting for 2 days.
Now, my questions are:

1.) is my doctor wrong about the EC being in my system for 5 days?

2.) could the EC make my period come late, and if yes, how late? (I should've started on the 11th [2 weeks ago] and I had symptoms that I was about to start, but still, nothing, and I've taken 2 pregnancy tests since, and both have had a negative result.)

any help will be greatly appreciated.. thankyou in advance