I was going into my CD 70 today (PCOS) and went to the gym for the first time in 2weeks. While i was doing bench presses i felt like something was being pushed out. I went onto doing crunches and it was continually coming out with each crunch so i went to the bathroom and saw blood for the first time since November. I've read all sorts of things about exercising causing period to delay but can't find anything about exercising causing period to come. Now just waiting for it to stay so i can get an HSG done. Has anyone ever bled due to exercising?