Hi, my name is Ron. I currently have diabities, restrictive lung disease, and hypothyroidism. A few weeks ago I had a heart catheterization completed? Arteries only showed a 30% blockage. No stents were needed. My Dr said the water was a wee bit higher than normal 1.5, ml . Ever since then my fatigue level has ncreased slot, my feet get cold and jgradually my toe nails are turning a blueish purple color. I don t see my cardiologist again until October. Should I be concerned? I am a white male, 47 yo, 5 5 tall @ weigh 187 lbs.