I have been having problems getting my snake to eat so I made changes to the cage to get temps and humidity up and regulated. I redid the lid, got a basking bulb, got new hides, ground cover, ect. Then a few days ago I noticed the snake acting odd it was rubbing its head on thing, yawning, and just keeps holding its head up. Yesterday I got it out and was trying to see if it had something stuck in its mouth and noticed bubbles coming out its nose I have been keeping an eye on it and there have been no more bubbles but its still holding its head up. Any ideas?