I am almost 6 week post c section and bleeding again. Period or post baby??

So my baby will be 6 weeks in 2 days and I’ve started bleeding again. I am not breast feeding and had a c section so is this my period or is this post baby bleeding? And should I be worried it’s returned if so?

I bled for about 3-4 weeks after baby and then it stopped (2-3 weeks ago) and I’ve started bleeding again tonight along side of on and off cramps.

It’s bright red

What does everyone think?

Tia xx