Hi Lost One--
What a great story. I have also been living with Panhypopituitarism since I was 10 days old which was 31 years ago. I don't call it a disease I call it a condition because we don't suffer like people with Cancer or other diseases. We can live a healthy normal life all we have to do is take some medication on a daily basis. That's it.
They haven't found a way to put a new pituitary gland in our system. That's really the only thing that is wrong with all of us. Which they can't because that's a very sensitive area of the brain and we'll never get that chance, and if I was told they found a way for it all to go away I wouldn't take that chance.
I went through a similar situation like you did last year. I thought I was immune to the medication and I was essentially healed. Boy was I wrong. I was getting migraines and having many other problems. Slow heart beat constipation etc,,, I completely got off my Synthroid, Cortisone, and other medications and Said I don't need this! 3 months later I was at my house and half dead on the ground in my living room. Thank God that my cousin found me or I would've been dead, If you were getting migraines and all that you were probably on too much. Have your doctor check your levels and enjoy your life with Panhypopituitarism. Feel free to email me at firstname.lastname@example.org. I'd be more than happy to talk to you more :)