Super short period

El
Hey ladies 
​I guess this is TMI, but no pictures.
​My period came about a week late. I had spotting (super light coloured red) on Saturday. By Sunday I had my period, it ranged between light and heavy, with light, dark and kinda brownish blood. And last for only three days. This never happens. First off, I NEVER spot. EVER. Secondly my period always lasts for about a full 5 days. Normally 3 days are medium-heavy and the last two are light. But I still need to wear a pad consistently with them. This is just so different I was curious if y'all thought this sounded like a normal thing or not. I think I may have just super believed I was pregnant this month and now I'm gripping at straws. 
​Thanks for the time ladies, super sticky baby dust to all of you!