Clogged arteries. , i dont want to die!

My test showed very high cholestrol of 250 4 months back disnt took any medicines , was on dietary modifications cholestrol indeed dropped but to 218 only still very high, and since some day i am feeling pulse in my butt and hand and sole of feet(at sole of foot its very mild vibration kind of feeling of needle and pins which feel like it is synchronized with pulse, feet feel a little cold ) i dont know if its due to anxiety i am feeling such things or its something serious, , read a lot literature online and now i am scared although in my whole family none had heart issue till now neithee we have gentic high cholestrol, but i think that i was on a very bad diet and sedentary lifestyle and that may have made my arteries clogged with in 2 years, i was eating bad things for last 2 years and now the thought clogged arteries have me near another mental breakdown, is there any test i should have as i had ecg echo which were normal 3 months back , please i live alone , i dont want to die