iggle24,
Go to WomensInternational to find a hormone specialist at
https://www.womensinternational.com/..._referral.html. Then you can request the referral.
You may need to get firm with your GP. It is obvious he is clueless about PCS. That is quite the norm.
You might try adding L-Tryptophan to the melatonin for sleep.
Avoid the sleeping pills if you can. Most interfere with the problems your brain is already having.
My best to you.