I have adrenal suppression, and take hydrocortisone 15am & 10 pm. I have had half of my thyroid removed, recently, lab tests have shown a very underactive thyroid, so they started me on 25 micro of synthroid, I only took half a tablet two days in a row then stopped as I became very hyper, just couldn't tolerate it. It has been a week and I still feel heart racing, nervous, just sick and awful, so jittery, I can't even barely take my hydrocortisone, now too, What happened? Seems like it is taking forever for this to get out of my system, what can I do? starting to feel symptoms of low steroid too now, I am scared any advice?