[¯|_(ツ)_|¯]

Since you took the morning after pill, I highly doubt that there will be any way that you will get pregnant, even if some of his sperm was able to enter you. The morning after pill is highly effective if it is used within three days, and you took within about a day, so you should be fine.

I know that it's hard, but remember that your period isn't even due yet. You're right that it may be early or late due to both stressing and the morning after pill, but until you miss your period, I'd try and remind yourself that you did the right thing by taking the morning after pill, and remind yourself that it's really effective. Try and take your mind off it for now, at least until you have missed your period.

If it helps ease your mind, you can take a pregnancy test 2-3 weeks after having sexual intercourse, so you can take a pregnancy test fairly soon. You can get one at a grocery store or pharmacy, or even go to a family planning clinic. However, I think it will be negative since you took the morning after pill.