Oh HotI, big hugs to you hun.
Is there someone you can talk to, to share your thoughts and fears with? Does writing help to work through your fears? What fears are you experiencing at the moment?

I also agree with Tegam's suggestion to do something relaxing for yourself, like a massage. Or if that isn't possible is there something you enjoy doing that gets you out of your head for a time - ie. bath, walk, swim. Can you spend some quiet time talking to and connecting with your bub? Is DH home to distract and care for DD so that you have the space to think only of yourself and your belly bub for a time?

Do you have a positive affirmation that you can gain strength and inspiration from? Arcadia used one during her birth, and I really like it: 'I choose to say YES to the power of my body and accept myself completely'.

Sending love and strength. We are here listening if you choose to share more of your fears and thoughts with us.