Starting to be a smidge but worried

So last month I had my normal period on time blah blah, I’ve been sleeping with this guy and we ended up not using a condom blah blah.. long story short ; eight days before my now late and missed period I was spotting for day and half or so I’m not sure if I should be taking a test or if the spotting was just my period and it was early and ever so short .. should I be taking a test or ??