Why Does Period Look Different Why Does The Blood From My Period Look So Different This Time?

Why does the blood from my period look so different this time? - why does period look different

My period came yesterday, but it was soo thin and light and very little .. and today there are more like the size, if you have a circle with your thumb and forefinger making, with a fine hand .. but .. Blood is too thin Think it's time .. Mine usually takes 7-10 days. It is not so. Only usually heavier. I am 13 years old and I've been 9 months.