Before I had my children, my cycles used to be 28 days exactly. Since having my second child, they've gone from 27-31 days. No big deal. However, my last cycle was 37 days, which is highly unusual for me. I guess I could have just ovulated late, but I'm not sure why as nothing really changed. I thought I was maybe pregnant, but the tests I took at day 32 and 35 were both negative. I got my period yesterday, and it started off fairly normal, but today, I have already had to change my pad 3 times and even my trousers, and it's only 10:20. I leaked onto my pyjamas as well through the night. I have also been passing fairly big clots. My periods are usually quite light, I normally only need to change 2 or 3 times a day. And I never usually have any clots. Is this something I should be concerned about? Or maybe (hopefully) just a once off heavy period?