Thank you all so much for your replies.
He is doing a lot better today, he's still eating, drinking and playing.
I went out last night and while I was getting ready he started whining, even though my parents were home and they were calling out to him, he just kept sitting between my legs and whining.
I think he was just scared that I was going to leave him again.
Today I've only seen him shiver once when I was in the bathroom once again and he was at the top of our stairs looking and thinking that I was about to go out but I wasn't.
He is acting a lot more himself now.
I will never leave him at the groomers for that long anymore, and I will maintain his hair cut myself now.
Thank you so much everyone for your kind advice and opinions
