Congrats on your pregnancy myson!
You'll be fine and I am sure everyone will be thrilled for you! Everyone knows that people change their minds, especially as the other kids get older (my parents waiting 10 years to have my bro and mum was 47 when she gave birth)
I don't think your chickening out! Why not wait until you've reached 12 weeks - by then you'll be more adjusted too!!!

I hope you have a wonderful pg