TMI: Intimacy 5 Months Post Partum

I’m curious if anyone else has had this experience or wondering if it’s something I need further medical help with.

My husband and I have been having sex regularly after having our child 5 months ago. What’s been consistently happening with us, no matter oral foreplay or avid lube use is that whenever he pulls out to readjust, I feel a painful burning when he gets back in.

It’s not when we first start piv, but only after pulling out fully and going back in. Even after reapplying lube, it burns like a uti or like putting an alcohol pad on a cut. Any advice or are we SOL?