Help!

Okay so I took a test last week Monday.

Not really sure if it came out positive or if it was just an evap line that I was seeing. I didn’t retest because I started what I think was a period but it was SUPER light. Like not enough for a tampon but enough for a panty liner. From Friday to Tuesday morning. Then it was just gone. My question is, should I retest? Or not worry about it? My best friend thinks I should just because of how light this “period” was and because it was so short as well. Let me know what y’all ladies think. Thank you in advance.