Congratulations on that new little one. I am sorry you are going through this right now.
I would talk with your phsician about making an appointment with a Pdoc or a therapist. If you have been medically checked out and no cause has been identified you may be having some post partum issues and working with a therapist on learning how to control the anxiety would be a good choice at this point.
Many people do not see themselves as anxious and yes just about any somatic symptom can be brought on by anxiety or panic attacks. If you have called 911 three times I would guess you were having some major anxiety about what was happening. You had every right to be afraid as the symptoms are real. It is the cause that needs to be determined.
Take care and keep posting.
Gentle Hugs to you NewMother.
Moderator Anxiety ~ Panic Disorders
*~* Not a mental health professional at all *~*Dx: Anxiety/Panic, Depression, GERD, Osteoarthritis