Supermodel Barbara Palvin was recently diagnosed with endometriosis. "Hi guys, it's been a while! Just a little update and a few thoughts for those out there who could relate to what I'm about to share," Palvin, 31, wrote via Instagram on Sunday, August 17. "For some years now, I've been dealing with the difficulties that can come with my periods. Fatigue, severe pain, heavy and irregular flow, sleepless nights on the bathroom floor. I thought this was just how it works for me.