Implantation bleeding?

I had a missed miscarriage back in May. As soon as bleeding stopped and they had a ultrasound showing everything passed, we were given the go ahead to try again.

I've been waiting on my period to show but we had unprotected sex in the meantime hoping for our rainbow. The last couple of days I've had spotting but was wondering if implantation could last this long?

With my angel I had implantation bleeding but only spotted a day.

So...what do you think? I'm not sure what it would be if it isn't. AF is usually loud and proud. 😩