Feel like I don’t deserve happiness

I’m currently 35 weeks pregnant, recently moved into my new house and I feel happy. But I’ve just go this overwhelming guilt that I don’t deserve to be happy. I just keep waiting for my partner to mess up, bad anxiety about something happening to the baby and just general doom and gloom. I don’t know why I feel this way, having a baby is all I’ve ever wanted. What I want now is all I ever wanted. I just feel like this life wasn’t made for me and that I deserve to be unhappy. Why do I feel like this? Do you think it’s my hormones? Should I see my doctor? Thank you in advance for any advice