Being sleepy and back pain.

Patient: Im a 30 year old 5’4 male current weigh 124. My back has pain in the spine it feels like not the muscle. Its mid to lower back with some pain shooting down my leg.Some days its not so bad most days are just a very uncomfortable pain. Like 5 on good day 9 on a bad. Almost evry day I get realy sleepy around 3:00pm or 4:00pm and sleep for around 5 hours and still be sleepy Ill go to sleep around 9:00 or 10:00 and sleep till 9:30am. My back always cracks when I straiten my back and I can feel it it in my chest. Some times my skin feels sensitive like almost raw. I feel like i should get checked for somthing anyone know what could be rong with me?