DCM is a heart disease where the muscle becomes stretched and thin, unable to pump blood around the body efficiently.
The 20 year who was brought to the Club by former boss Steven Pressley from Rangers failed to make a first team appearance for the Sky Blues, and despite signing a three-year deal with the Club, was released after just one.
Urquhart then joined Dunfermline back in Scotland, where he was again released at the end of last season.
“The best would be that it’s just an illness I have picked up and hopefully I get a quick recovery,” he told BBC Scotland.
“The worst case is that I’ll maybe be a few years out of football.”
DCM can be inherited, but there are a number of other causes, including viral infections, uncontrolled high blood pressure and problems with heart valves.
Asked if it might mean the end of his playing career, Urquhart told BBC Scotland: “It could be. I’m not going to sit here and say I’ll definitely come back. I just don’t know.
“But I’m optimistic. If I’m lucky enough and it does improve then I’ll be over the moon. If not, I’ll just need to deal with it.
“I knew something was up in the last part of the season, I’d gone to the doctor and it is just in the last couple of weeks that I’ve found out the condition.
“Even in the warm-up, I was becoming quite breathless and I was starting to doubt myself and thinking I was a bit unfit maybe, because I couldn’t control my heart rate.
“I would start running and I had no control of my breathing, but I was desperate to play. I didn’t want to come off and say I had this wrong with me – but I knew there was something wrong.
“When I first went to see the consultant and she told me, I felt faint,” he said. “I didn’t know what to think or what to say.
“But I appreciate now it could have been a whole lot worse. I could have been playing last season and something could have happened to me and I appreciate that now and I’m just happy that nothing has happened and I have got a grip of it.”