Implatation?

Trying for baby #2. Had sex on two of my high ovulation days 9 days ago. Started spotting today. Period due in 4 days. Could this be implantation bleeding? I’m bleeding light (not enough to fill pad and it’s rust colored like old blood. Light cramping but nothing severe like when I miscarried last june. Praying for our rainbow baby👶🏻🌈