Licorice (NOT DGL), and B-5 supplements... (about 2 pills each 3x's a day) will greatly lower the burden on your adrenals. You can start off lower and work up to this dose if you like. It will allow your body to more easily handle stress and recirculates some of the stress hormones to give your adrenals a break. If you're being held back on your thyroid by adrenals... this should do the trick.
If you want a quicker test, you can apply OTC hydro-cortisone cream (like for an itch) and see if it relieves symptoms... if it does-- your adrenals need help. I wouldn't recommend continued usage though (on the HC cream) since it's easy to over do or cause problems.