My partner was diagnosed Factor 5 linden about 15 years ago after having a massive clotting event. he almost died. A brave interventional radiologist saved his life. He was eventually put on Xarelto daily to prevent further clots. Fast forward to 1 week ago. Rick started having swelling in his leg and he started to have problems breathing and felt his heart was racing. Went to ER and they discovered "old clots" in one of his legs but nothing in his lungs. I am having this feeling that Rick may be having a clotting reaction caused by his 3rd covid booster. We are both scared and want to come to Mayo Clinic in Phoenix.