Help!! Implantation bleeding???👀

Hi everyone, I’m usually extremely regular with my periods, my next period is scheduled to start on Sat., it’s currently Tues. and day 25 of my cycle. Yesterday I noticed a very faint hint of light pink spotting but wrote it off thinking it’s probably nothing. Today was the picture! Idk if I’m reading too much in to everything. My husband and I are not necessarily trying to get pregnant but we haven’t been careful this month at all. I also haven’t been feeling the best the past few days (tender breasts, headaches, little nausea). I took a test yesterday that was negative, but possibly because it’s just too soon? What are your thoughts😅😬