13fullmoon,
See my answer to your post that you called "Frozen".
This is almost certainly
sleep paralysis.
It is associated with stress and lack of sleep. They are also more common in people who have a history of panic attacks. Very frequent episodes of sleep paralysis are a symptom of narcolepsy.
I am very surprised that your doctor and counselor have never heard of sleep paralysis, and even more surprised that they have never heard of hypnagogic and possibly hypnopompic hallucinations, because those are very common.
It is likely to be sleep deprivation because you are a new mom, but would it be possible for you to go to a sleep clinic to be tested for any sleep disorders just in case?
Is there any chance you are suffering from postnatal depression? Depression can make it harder for you to fall asleep or to stay asleep.