Hello! 
First off, I will say that Rupert (aka Poopert) is already 100% back to normal, but this was odd enough that I thought I would ask your opinions as I’m not sure if it really was gas or just a coincidence that him acting better coincided with the gas drops… 
(Why do bunny’s worry us so lol) 

My previous bunny had lots of gas issues, so I thought I was familiar with the signs, such as pressing the belly into the floor, but he showed discomfort completely differently. 

He just kept laying on his side with his back legs pushed straight back… he would move and just keep pushing his back legs out behind him… so NO hunching or pushing his belly to the floor… he went to his litterbox and flopped on his side, pushed out his back legs again and was kind of trying to roll on his back (like a dog rolling on his back on the grass)… he would move when I came over to try to give him belly rubs, he hopped out of his litter box and layed out again. 
I went upstairs to get the baby gass drops and when I came back down he had peed outside the litter box, but hadn’t moved from it. (Keep in mind, he was just spayed 3 weeks ago, so we were still working on his litter training – so I’m not sure how much of a red flag peeing outside the litter box is at this moment) 

So the only similar signs to gas pain, going from 100% fine to not rather quickly and refusing food… he did pop out some poops when he move away from me trying to give him belly rubs. 
About an hour after he got the baby gass drops and had allowed some belly rubs he finally started to nibble at food again and was 100% back to normal 20minutes after that. 

** Does anybody else’s bunny act like that with gas (doesn’t hunch, didn’t grind teeth, didn’t try to push his belly into the floor) but just laying on their side, pushing their back feet out over and over. 
Thank in advance… I just want to make sure that I’m only looking out for what may have caused the gas and not something different.