So confused! Please help with advice!

My significant other and I are trying for a baby again. We’ve lost two and given the go ahead. This is the first month of trying so it’s also the first time off the birth control (but I was only on it for a month). So according to the glow app I was supposed to ovulate on the 15th of this month. I didn’t track it so I’m not sure if the app was right or not. We did the baby dance a few times during my fertile window. But here’s where it gets weird. I’m not supposed to start my period on until the 1st and I started spotting on the 20th. By the end of the day it stopped and was gone. Yesterday (the 21st) it started again and then stopped. The same thing happened today. It started again and has now stopped. Each day it starts off light brown, then gets pink mixed with brown and then reddish pinkish brown then turns brown and stops. It’s not enough for a pad or to soil my panties. It’s only when I wipe. Could this be implantation bleeding? Or a weird hormone thing for getting off the birth control? Or a super early weird period? This was from the first day. Yesterday and today I had more than this but again not enough to get on my panties. And it’s only happens once.