I went to hospital because I had a pain in my left calf for a few days, felt like cramp. 9 hours later in hospital turned out I have blood clots in both lungs. O m g , where did they come from. Had no long flights, nothing they usually causes them. Put on Rivaroxaban 20mg , been on them for three moths now. Been off work and waiting for results from CT , mammogram, blood tests, CT for stomach and pelvis too. Petrified that it could happen again !