It's my understanding that there's greater risk the higher the age, but instead of asking random strangers, I recommend speaking to your primary care doctors and also finding a doctor that manages pregnancies. They can inform you of the risks and mitigation strategies. As far as I know, it is not too late.
Secondly, you should absolutely find a therapist (edit: missed that you're doing that already), perhaps one that specializes in these issues, and also a psychiatrist to help manage your anxiety.
Secondly, you should absolutely find a therapist (edit: missed that you're doing that already), perhaps one that specializes in these issues, and also a psychiatrist to help manage your anxiety.