I was 33 and was in a long term relationship with a very supportive partner, I thought I wanted a baby (so did he) and I got pregnant first try.
Everything changed and it was literally Hell. I was never, ever happy or excited, I was desperate to have a miscarriage and it felt like I was in a living Hell. By the time I was 7-8 weeks, I wanted to take my own life as I just couldn't cope with how I felt. I was prescribed anti-depressants which took the 'edge' off of feeling like I wanted to take my own life, but I came to the conclusion that I either had a termination or I took my own life - 'surviving' another 6 months of pregnancy was not an option and I terminated at 12 weeks.
I'm now 38, married to my partner (who was nothing but supportive and incredibly understanding and didn't push me in any direction) and will never entertain the idea of 'trying again'. Looking back, I had really bad antenatal depression which, even today I don't believe is fully understood and seems to certainly be less talked about than post-natal depression.
So in answer to your questions in your first post - Yes, I did feel like that. When I had my scan (which was in a hospital waiting room with excited Mums to be) I was hysterical and felt so guilty for not wanting to hear a heart beat as then the 'decision had been taken out of my hands'.
I also know a few other women who felt like us - but, they are reluctant to vocalise how they felt as we're 'supposed' to be so happy we're pregnant and everything is just so 'exciting and fun' - But it's not, it wasn't for me and I'm sorry it's not for you.
It's really great that some women went through with their pregnancy despite their struggles and are really happy how their life has turned out - I only posted to show the other side of things, that there is no 'one right answer' for everyone feeling like this and I'm on the other side of things.
I don't regret my termination. I never expected to feel like I did and I don't regret it - I only regret trying for children in the first place.
I hope you are feeling a little better today and work out what's best for you - whatever that decision is.