Hello Loony,
I just wanted to share my experience with you as it may help.Sorry if it is long...
With my second pregnancy I was just like you.Although it was a completely planned pregnancy and I was elated when I found out , quite quickly and apparently from nowhere I had completely overwhelming feelings that I had messed everything up. Even though I knew it wasn't logical, I just couldn't get out of my head that I'd made a mistake ,I might die giving birth etc. Just really powerful feelings that I'd ruined everything, and I just couldn't think myself out of it.
It was all completely unexpected as like you, I was ( still am) a quite independent, strong together person.
I thought it could be down to a very traumatic first birth experience , 70 + hours etc , also my first DCs father and I split up when he was a few weeks old.
So my second pregnancy was 8 years later with a much better DH. I really wanted to give my first child a ( half) brother or sister so one day they weren't like me, with sole responsibility for ageing patents. Then this terror gripped me that I'd done the wrong thing for everyone.
I told my DH again and again I knew I was being weird and this wasn't me. I told him I thought I'd be ok once I'd had the baby (although I didn't believe it). I told him it was nothing to do with him, and tried to say exactly what he had to do to help me.
He did do really well at trying to support me. I still felt overwhelming terror about the whole process and having messed up all our lives.I just felt I had messed everything up but felt guilty as I knew other people desperate for a baby. In the end I just wept in front of midwives, GP and consultant.
The GP referred me to a psychotherapist -it took ages to get an appointment , she was helpful but I felt I needed loads of sessions and there wasn't time.She prescribed anti depressants which I didn't take in the end, as I was getting near due date by this time.
Then I saw the consultant again, cried and she was brilliant.She just said you need this baby out,she made an appointment for a CS .
Then do you know what.I had a very professional, calm CS and a lovely new DD. My predominant feeling was' it's ok I'm alive'. I did it. The overwhelming feelings did lift.Honestly they did . I still don't really know what it was. Some kind of ante-natal depression/ post traumatic stress thing.. but it did just go. Your feelings could magically lift too.Really they could just go... But even if they don't just disappear they may start to fade gradually.
I was ok again!. I would advise you to cling on to that hope. Even tell yourself repeatedly that the feelings will lift. Repeat" It WILL be ok.It WILL be ok".
After the baby, get loads of help and rest.Stay in bed for as much as you can everyday for at least six weeks. Focus on feeding the baby, and reading magazines in bed.DH pampered me and served me meals in bed for days, although I was actually fine.Get your older one to come and sit on the bed and read.Also pay for some help for a few weeks when DH returns to work. Even if you go into debt for say £ 500 for a few weeks of some-one coming in to help cook etc it is worth it.Explain to your DH that he just needs to be a rock. That you think you have ante- natal depression, and that you have heard that in lots of cases it will lift. You will be ok, you will, you will. Also you are doing the right thing,giving your first child a brother or sister is a gift- it really is.