Need opinion!

Brandi • My name is Brandi and my fiancé`s name is Joe. I`m 23 he`s 25. TTC baby #1. I`m a hair stylist and he`s in flooring.
So AF was about 7 days late. Then I thought it finally came.. It was really heavy for a few hours then basically nothing for 2 days. AF is practically gone. Should I buy a pregnancy test still? Just seems a little weird. Please someone.. I need an opinion!