Right, quickly get and type out all your anxiety symptoms on this thread and hopefully voila they will be gone! It's like when you go to the doctors and magically get better for 10 minutes!
I was wondering if there was an environmental trigger? Cold weather makes my nose run more and it also affects asthma. Asthma is all about extra production of mucus. So, I wonder if something is triggering your mucus through those months?
If so, could you treat your histamine? I don't know about PND, do maybe the others on here can answer that? If so, you could try to treat it like hayfever season and experiment with a few remedies?