Period question?

My period always lasts 6-7days and this time it was late. It was only three days. I was wondering if that is normalPeriod question?
if you just got your period its normal for it to be irregular. but if you have had it for a while that's a different story. As for the fact that it is 6-7 days that is also not normal. you should see a gynecologist if you are worried
thats perfectly normal you shouldnt worry sometimes they rn short and they dont always start on the same days so dont worry