That's good that you were able to express this morning. I bet you got a lot of relief from it!
The stuff I use for Emily's nose is Nyal Junior Saline nasal drops, with aspirator (or de-gunker as I call it!!). It's great to get all the gunk out of their nostril.
Emily has woken up due to her blocked nose a few times now, I just try and keep her head elevated as much as I can until she's in a deep sleep.
How do you find the Ergo, is it worth the money? I have a Baby Bjorn carrier, but I feel like my back is going to break when I carry Emily in it. I don't know if it's her weight (she's just over 5kg) or the carrier itself that's causing it?