Could it be implantation?

Hi all. I stopped birth control back in September and have had a hard time figuring out my cycle since, although every month have gotten some sort of real period. My cycles have been between 31-34 days. This month on day 32, i began spotting brown discharge, but only noticed when i wiped after urinating. This went on for about 4 days and I’ve never had to use a tampon, which leads me to today. When i woke up and used the bathroom, i wiped and it was more of a pink streak- so i thought i had gotten my period. Nothing ever came of it though, and i didn’t notice anymore discharge from that point forward. I did take a pregnancy test yesterday afternoon which was negative. I guess what I’m asking, or hoping, is could this be implantation? (Although seems a little late) A girl can dream right?