Hi, I have calf pain in both legs that comes and goes about once a month and lasts for several days. Ongoing for the last 2-3 years. The pain is mostly only present with flexion, though sometimes tender to the touch. I have sciatica and spinal stenosis, but it doesn't feel like shooting sciatic pain. No discoloration, no swelling. Cramp in front and back of thigh intermittently. I am 26, male, occasional drinker, but the pain started before I was any kind of regular drinker, and occasional (rarely) smoker. I've had an ultrasound on both legs, both negative for DVT, but d-dimer was positive. I can't afford to keep going to the ER and the pain has me concerned because I do sit at a desk a lot. Any advice is greatly appreciated. Thank you.