Ttc question

Hi ladies!

I’m ttc #2 and have a question about possible implantation.

With my first I never noticed implantation bleeding so I’m unsure and I don’t want to take a test and have my heart broken another month.

BUT I had light spotting when I woke up yesterday morning and nothing else the rest of the day and this morning. My period isn’t due per glow for another few days but my cycles range from 29-34 days long. Yesterday was CD 29 so is it possible to have implantation bleeding when your period should be due?

We also tried the SME plan so we did BD around my fertile window. I know I won’t be for sure till I take a test but I thought I’d ask first. Thanks in advanced!