2008 Jeep Liberty Ticking in Engine

I am in Minnesota right now where temperatures of -25 with a wind chill to -50. I went to start my car this morning and a consistent clicking/ticking started coming from the engine. This has never happened before so I am guessing it came from the cold. I didn't drive it anywhere but I turned it on again later this afternoon and the sound didn't go away. I did a little bit of research online and found maybe its one of the three problems I found either its a bearing, a rocker arm or the engine isn't getting any oil. I want to take it to my mechanic but if it is a major problem I don't want to drive it and make the problem worse. Do you think I should wait till the temperature warms a bit, drive it over as soon as possible or have it towed. Thanks