Ok so yesterday I had unprotected sex, like I'm the middle of the day. And I forgot to take my bc before I went to bed... I was so tired lol. But I took it as soon as I woke up. It was the last pill in my pack (the last pill for week four & I start my new one today) should I take the plan b pill or do you think I'm fine? I finished my period on Friday so I just don't know if I should take the plan b pill? What do you guys think?