Should I test again

The four days of spotting was brown never got heavy enough to even fill a panty liner but had very small clots it never looked like my period but I tested 2 days before and it was still very negative… we are trying again this cycle because we don’t think it happened then. Could that have actually been implantation bleeding?? Those were june and julys june I had a normal period before dtd on the days circled… what should I do? I’ve also felt super tired and nauseous. As well as mood swings and insomnia. Not to mention the cravings