Am I being too sensitive ?

So my husband and I went to the gym today. First time. He knows more than I do so he's teaching me. Well, we got on the treadmill and as soon as I started running he started to laugh and I asked what was wrong and he said I jumped too much while I ran, he said I needed to pace myself. So I tried to pace myself and he said I kept jumping so I got annoyed and just walked on the treadmill. And he didn't even bother asking why I was stopping, it almost seemed like he was glad I wasn't running cause maybe I was embarrassing. But if I bounce too much and I can't help it, who cares right? That's how I run and I can't stop it even when I tried.

Then we went to lift some weights and every time I would make a face cause sometimes the weights were a bit heavy, he'd say not to make that face and laugh. So he would change my weights to something lower which I was fine with but why tell me to stop making a face? Literally, I was annoyed and he could tell. Then he gets mad cause I'm annoyed that everything I do, he has a comment to it.

Then the girl who checked us in today, asked if he liked the gym cause we're new to it and he said and kind of checked her butt out discreetly. But Idk if he did it on purpose, he's a peoples watcher. He likes to watch people, it's weird and funny sometimes. I've brought up the fact that I've seen him check out girls and he says he ain't checking them out, he looks at everyone. He does look at Guys too so it's true but one thing is that he doenst check a guys butt out for sure. I'm literally so frustrated and he thinks I'm too controlling and oversensitive. Am I being too sensitive and controlling?