Well Thunks, it certainly sounds like you've been through the mill mentally.
From what I gathered the CPN was saying one thing about your GP then telling you another thing entirely
, but please feel free to correct me if I'm wrong.
You had every right to be concerned about your LO and no matter what the CPN says, you should trust your instincts when it comes to getting treatment for your DC. I hope your LO is OK BTW. As a mother myself, I know how daunting it can be when you know something is wrong, but someone else is telling you everything's OK.
My rule of thumb is that you know your DC best, others know bugger all about your DC as they're not with them 24/7.
I would say that you should stick with your GP, becasue if you have seen them a few times, then they are bound to know more about you and your family than the CPN. Not only that, but the next time you're at your surgery, make it clear that you'll work with the GP's there if they work with you.
The "work with me and I'll work with you" phrase is one I've used at my own surgery, and I can now go to any GP at the surgery and have a good laugh with them all while getting treated. Becasue I've been treated well and like a human being (not a number), I have no problem dropping a box of shortbread down to the surgery for the staff tea breaks. I don't even have to say my name as they all know me down there, so I'm pretty much infamous
.