HELP! Period vs spotting when it comes to tracking.

My cycle is fairly regular. 4 days. I get one strong cramp, and know AF is due to come any minute now. By the fourth day, it’s darker and brown and I know it’s coming to an end. I stop bleeding almost entirely. USUALLY that’s when my boyfriend and I will have intercourse, and even if we don’t, I always have light pink spotting after. Is this considered day 5 of my period for tracking purposes? Or just spotting?

Just want to make sure I’m recording everything as accurately as possible as I’m TTC.