Hello, First of all please stop taking the Vyvanse. One of its side effects is muscle pain as you have described. It is a drug that should not be taken unless specifically prescribed by a physician. Regarding the worry about blood clots as you have expressed , blood clots in
varicose veins rarely travel to the heart because varicose veins are superficial veins. The problem of a blood clot breaking and travelling upwards to the lung and heart which we call as
pulmonary embolism in medical terms arises due to a blood clot or thrombus in the deep veins of the lower limb. One must remember that while varicose veins as such are not dangerous, deep leg vein clots called
deep vein thrombosis in the leg is dangerous. Deep vein thrombosis can present as calf pain with an increase in size of the affected limb etc. This condition is investigated using tests such a Doppler test and D-Dimer test. Please get the following tests done-
Complete blood count, creatinine kinase, Doppler test of the lower limb, CT
pulmonary angiography . Some pulmonary emboli may be clinically silent , however some may cause sudden death. Since your
cholesterol levels are high ,I presume that you are managing it under medical supervision. You may get a more detailed
lipid profile assessment which includes LDL, HDL, apolipoproteins, hs CRP etc. However , the most important step is to exclude deep vein thrombosis in your case even though that is a rare possibility here because deep vein thrombosis usually occurs in people who have had prolonged bed rest, after surgery/trauma, certain cancers, certain rare inherited disorders which cause the blood to clot inappropriately etc. Best regards