Not Typical: Implantation or cycles restarting?

Ok so I had my second baby 13 months ago (almost exactly) I haven’t had a period and have been (still am) exclusively breastfeeding. (Had an emergency c section)

On the 4th, 5th and 6th I had high ovulation readings (peaking on the 5th. I had sex the 4th and 6th. Today (10th) I’m having spotting. Some of its pink, some of it is brownish. It’s not filled up a pad. It’s VERY light. No cramping but do feel a little off (like tired but maybe it’s just a normal day due to lack of sleep 😂)

Would you say it’s my period or implantation bleeding. I will say I’ve had implantation bleeding before with my first but it was a speck! Nothing more! So I’m confused and wondering…can you get peak levels days before period?