I have 3 hard flat indented spots on my lower left calf. Its dark in color looks like a bruise in a way but is not.. It is hard.. Started as one.. Now I have 3 on this leg.. It actually looks like someone took chunks outta my leg because the indents are very noticeable. Thes spits are low on my calf almost near my ankle.. The first appeared about 2 years ago.. I worry about heart issues.. I have breathing problems, high blood pressure, problems with fluid, tins of varicose veins popping up all over my legs. Also, have been experiencing low heart rate, low oxygen says, could thear spots be a sign of heart failure?? I am scared..