Pain in leg muscles, tendons, and knees after Bilateral PE on Eliquis

One month after massive bilateral PE and taking 5 mg twice daily. Experiencing constant and continual pain in legs, mainly behind both knees, in tendons, and some muscle flare ups. Have had two ultrasounds and a CT scan on both legs since I was diagnosed June 6 and they are negative. My D Diemer is .43 and all vitals strong and regular. Echocardiogram shows no strain on heart. We have ruled most everything else out. No trauma to legs, no cuts, bruises or strains. Is this related to the Eliquis? My local hematologist wants me on it for another 5 months, I won’t be able to make that unless this subsides. Anyone else out there having this issue? Recommendations?