Thymus symptoms and conditions

I had my thyroid removed because of cancer. I was 18 years old. At that time, I was put on Armour thyroid because that was the only thing available. I am now 56. Somewhere along the line they figured out how to make chemical thyroid and of course I was put on it - for the next 35 years. Blood checked so many times I can't remember, dosages changed. Always a runny nose, hot and cold always a problem. I drink something hot and I start sweating, I drink something with ice and I get the chills. Back on Armour now - not the absolute best - but certainly much better than synthroid! Still what do you do when you have no thyroid? Also to let you all know, after the thyroid was removed I was treated with Radioactive Iodine, and told that I probably could not have children. Well, I am stubborn - I have three boys - had them at ages 23, 25 and 37! Many, many problems through the years ( oh yeah, the radiation treatment that I had at 1 month old fried my thymus as well as starting the cancer - it took 17 years for the cancer to develop. It was only after all this that they began to find out the you really did need a thymus too. Oh well, I could go on and on. So find me a solution to my thyroid that is gone. Can we regrow it like they are regrowing ears, fingers, etc?? Something to look into for the medical profession...