I'm on the second day of my period (4 days early, but I'm usually very irregular so that's not unusual). I noticed right away that the blood was thinner and watery, like it had been diluted. It's also bright red. Now it's day 2 and I've had two huge clots come out within the past 2 hours. I use a Diva Cup and I've had to empty it every hour for the past 3 hours. I'm not sure if this is something to be concerned about or not; I've never had major clots, just small ones. I was also diagnosed with PCOS earlier this year. Any ideas?