"I got up and cycled home then went to bed and woke up in the morning in a lot of pain and then went to hospital," the singer said.
"I didn't even know anything was broken until the next morning."
Sheeran sustained a broken left elbow, right wrist and a rib in the accident.
The pop star also said he just fell off his bike, contrary to earlier reports stating a car was involved.
Despite his injuries, Sheeran was able to attend the 2017 Q Awards in London, but he cancelled his upcoming shows in Asia.