Are you taking birth control?

But I just kind of wondered if having sex usually does change the date of your period. I've always had it make some kind of change to mine, or it seemed that way. My periods haven't been exactly normal though, and that's why they put me on it.

I would almost swear that it does. It seems like it pushes it back if it's due whenever you're not taking birth control. I may be wrong, or it may just be in my head, but I would almost guarantee that it does.

Hope this helped!