Today my period was very light, I'm only 31, is this normal?

Usually my period are always heavy and the same old usual. But this month I did get my period on time and had bad cramps but very little bleeding. This is a very first time experience.

I did have a lot of stress this month, my dad wasn't well and had to go to a hospital, I wasn't sure if he was gonna live or die but he is slowly recovering but he is not the same as before.

I eat healthy and excercise daily, I also do areobics. I workout maybe for 1 and a half hour a day.

Today my period was very light, I'm only 31, is this normal?
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