You are definitely not alone.
As wonderful as having a child is (and it really is), actually being pregnant is fucking godawful.
My dc was an unplanned pregnancy, and was fairly straightforward until the end apart from relentless nausea (but never actually throwing up much so they couldn't really do anything for me) but it was miserable. I absolutely hated how vulnerable and out of control it made me feel too.
I was hot, sore, uncomfortable, my emotions were all over the place, my skin went to pot, my gums bled and I was permanently exhausted.
I was angry with my bump for ruining my life, taking my freedom, stopping me eating and drinking my favourite foods and generally clipping my wings as well as all of the physical things. Multiple times I found myself thinking that this was a spectacularly bad idea and that actually no, I don't want to be a parent at all (but also didn't want to abort, I just wanted to have never been pregnant in the first place)
I did bond with my bump a couple of weeks before dc was born though, when a very loud noise made him jump. I'm not sure why but that made something click.
It was bad enough that ds is 5 now and is still an only child, and is going to remain that way for the foreseeable future.
I would consider adopting before being (purposefully) pregnant again.
All of that being said, ds is five now and the absolute best person I have ever had the pleasure of knowing. He is the best thing in my life.
But what you are feeling is perfectly normal. I'd echo pp and say speak to someone, even if it's just your midwife