painful,sleepy hands and fingers

Recently ive started a new job in a factory at night and have changed from a daytime tradesman. During the night and when i wake up in the morning my hands and fingers have been tingling(like there asleep)hard to move and have been very sore,im only 33 years old,at first i thought it may have been arthritis because of the cold in the factory but it seems like its getting worse,at work it seems to disappear but when in bed and when i wake im in pain,i have been using a load of deep heat or running my hands under hot water which helps for a little while,what to do? thanks