Spotting

So, I’m 5 weeks postpartum from having my daughter. I got cleared from everything at 3 weeks which is also when I stopped bleeding. I haven’t bled since then but this week I’ve been spotting I’m just wondering if this is normal? I have had sex but we used a condom. The spotting it comes and goes I never experienced this with my first child so I’m confused why I’m having spotting? I’m also not on birth control at all.