My rabbit has been very gassy last night and today. He is still eating his greens, hay and any treats normally.
I can hear all the gas popping around in his belly! I have given him a couple doses of gas meds already. His belly does not feel super big but there is a small hard bubble or knot or something right under his ribs over to one side. I can hear and feel the gas moving when I gently massage this spot.
He is not hunched up or pressing his belly to the floor or grinding his teeth or anything that makes me think he is in a lot of pain. He has been flopping and stretching out like normal.
I have never heard such loud gas coming from him and I just don’t know how serious gas can be and how concern I should be.
I have been giving gas meds and belly massages when he lets me.
The only difference in his diet is he has had some kale the last few days and hasn’t had kale in a while and also dried willow leaves which he has never had before.
What else should I do?!? Will this pass or could this turn into something serious if not handled properly? I am worried 
I wanted to add that he also hasn’t pooped a whole lot today but he is also gives me a fright with this often. He won’t poop for enough hours to make me worried and then all of a sudden I’ll check on him and there is a mountain in his litter box!