Pregnancy test?

Okay I took a pregnancy test this morning. It was negative but I *think* I saw something.... if I test again tonight will that change anything or should I wait? I had a miscarriage on May 1st-8th and I did take a test to make sure all HCG was gone. Trying again... and now it’s today.... wondering if I’m pregnant or 18-19th brown discharge was ovulation or implantation. Hope I didn’t confuse anyone. My question is should I test or not test right now ..