Am I absurd to worry about possibly having pancreatic cancer?

I'm 23, which I know is terribly young for pancreatic cancer, but I've been a heavy drinker daily for 2 and a half years...averaging 6-7 drinks a night. A week ago I decided to stop because so many people I know have been dying...one of which was due to pancreatic cancer. Now that I've quit drinking, I'm having some mid-back pains which are worrying me. It feels like muscle pains more than organ pains, but I don't know how to tell what it's supposed to feel like. When I touch my mid-back muscle it hurts. Otherwise I don't have any notable abdominal pains. Am I being silly worrying about pancreatic cancer at 23 with just a sore back muscle? Or should this be a concern?