I have been feeling pretty bad after having a heart attack in Jan 2014 although cardiologist says heart is fine and no worries. But my blood test results through the doctor were 'Fine'. I had an anxiety attack the other day and in A&E the results of the blood tests for my thyroid were 'Normal. And Yet when I had a 24 hour urine test the results were very low for T3 at 225, normal 592-1850, and T4 at 150, normal 347-1994. How come the NHS blood tests are all given as normal? I am short of breath, anxious about everything, get the shakes, and feel awful. I only eat good food now, no sugar and no pies etc. My endo said I have weak adrenals so I am on Nutri Adrenal Extra, I find I cannot take more than one tablet. I have become a hypochondriac, I am on Clopidogrel until January for the blood thinning and aspirin. My progesterone and estrogen came back with very low. I think the endo is putting me on T3 and T4 shortly, at the moment I take 25mcg levothyroxine. I have a deep voice at the moment. Is this normal hypothyroid, I am very mixed up with different doctors, hospitals opinions.