I just had my first period after birth (5 weeks ago)

Emily • 19, happily married, baby #1 a beautiful girl born 2/16/16, #2 due 2/05/17 with a baby girl ❤️
5weeks ago I had my little girl and I just had my period today😡😭it's a lot worse than they were before I was pregnant. It doesn't hurt as bad but it's so much heavier than it used to be. Has this happened to anyone else? Also will it go back to my "normal" flow?