Hi. Advice please.

Hi all! I just Recently had my period. It generally is 7-8 days. This month it was only four. It started the 18th and ended four days later. Which is unusual. I've had cramping VERY VERY bad after which has never happened. I have SOOOO much fatigue.. Multiple people say I should still test because they both got periods when they were pregnant. Should I take a test?! Advice please!!!