Help please!!

Stella • lost baby #1 at 15 weeks May 2017. Pregnant with our rainbow baby!!😆💓due Sept. 2018

Can anyone tell me when they got their first real period after a 15 week miscarriage? I've wasted so many pregnancy tests in the last 8 weeks.. the last one today. Because I have no idea what my body is doing!!!

Miscarriage was on May 13.