Diastasis Recti - Pain?

I’ve been dealing with pain under my armpit and in my chest area (I’m a guy) for a few years now, and it’s really starting to get worse. I’m so tired of visiting my GP because it feels like they have no idea what’s causing this pain. Lately, I’ve also been feeling lower back pain when I get up in the morning, but it usually goes away after about 30 minutes. My stomach has been achy throughout the day, but it tends to feel better when I go to bed. I have diastasis recti, and it seems to be getting larger again. It’s frustrating that GPs don’t seem to understand this, especially when it’s a man experiencing it.

So, my question is: could all this pain be related to my diastasis recti?