Mother 86 lower leg pain swelling cramping significant bloodclots in right leg smaller in left. Is taking Zeralto. Which can be fatal. Is there anything else mother can take to help prevent bloodclots. She took an Aleve and the next day she looked pale. Took her to ER. They said she had lost 1/2 her blood. Had a blood transfusion. Was better the next day. But could not find where the blood came from. Even after full body mri. What has cured or eased lower leg pain or blood clots for some one you know. Mother can hardly walk. Any outpatient surgery to scrape out the veins to help blood flow?