69 Years Old Male Pretty Good Shape Had An Episode

69 years old male pretty good shape had an episode that started with tiredness and a few days later exhaustion and very short of breath the doctors hospitalised me for 2 days with a pulmonary embolism because that's what medicare suggested. How long does it take for an embolism to dissolve and long will i feel exhausted? I am on Eliquis. My oxygen level was 83 when I went in the hospital