I have been having severe pain in my lower back, when i try to get up after laying down, i can't, i need to lift my knees and turn to my side to get off the bed, this has been occurring for months now.

Severe sounds bad: There are many possible causes of pain in the back in young or middle-aged adults. Severe pain means a trip to the doctor, such as one's primary care doctor or the local ER if one does not have a primary care doctor. There could be a muscle strain or spasm, inflammation in the joints or tendons, nerve pain from the spine or on the skin, a spine bone problem, a tumor, etc...