I’m 5 1/2 months postpartum for my 5th baby and just got my first period- started Friday- but it’s been extremely heavy! At work last night I started at 6pm and had to leave at 11:30pm because I went through 6 tampons (overnight ultra ones) and ran out! Today it’s the same! Very heavy, I’m in so much pain. Has anyone else gone through this? At what point do I contact my OB?