Advice Please!

Lauren • 🤱 Tybug 💍❤ Arizona Native 🔥

I'm currently 4 months pp. My fiance and I have protected sex but very rarely. I had a normal period last month but this one I've only had pinkish brown discharge that's kinda looks like mucus plug almost. On my app I'm considered 5 days late. I'm terrified to test because I do not want a second kid. Is this just a normal postpartum period? Or could it be more?