Has anyone had a shorter period??

Emma • Hi im Emma, im 29 years old! I have 2 children one 6 one 4 and trying for a much wanted 3rd baby to complete the gang!
Than usual & found out later on that your actually pregnant??
My AF usually lasts 5 days 3 of them quite heavy & then 2 light days. 
This time iv had one day of spotting, 2 light flow & now nothing. Should i get some tests in? Im asking this because i think i had a weird period like this with my first child but that was years ago & hard to remember 😁😁