I had unprotected sex on September 1st I took the morning after pill about an hour later . My last period was august 23rd and my cycle is usually 32 days . Not using any contraceptives. Just wondering will the plan b work? Thanks

Only way to know for sure is to take a test 3 weeks after unprotected sex.

It's pretty effective when used right away but not 100%. So like @bluerose9 take a pregnancy test in a few weeks to confirm.