Postpartum/Plan B and Period

I had my dd at the end of May. I got my first period 5 weeks later. The night of my 6 week appointment, my husband and I had sex. We decided not to risk anything and he finished with a hand job..no harm there. I wiped my hands clean with a baby wipe and then, for some idiotic reason, then cleaned myself up with the same wipe! 🤦‍♀️ Now, I know there’s slim to no chance of getting pregnant from that, but neither of us wanted to risk it having a toddler and newborn at home. The next day, I took a Plan B. Two days ago, I started brown spotting which I thought was just a side effect of the Plan B. But then, the next day, I started another period (about 9 days after my first postpartum one ended). I know my hormones are probably still all crazy from baby and then taking Plan B on top of things probably didn’t help. But does this seem like anything I should be concerned about?