I am a 25 year old male. 170cms and 85kg. About 2 weeks ago i started experiencing a lower back pain when i woke up from sleep in the morning. It was so intense that i could not even bend over to wear bottom wears. I applied some pain balm and took ibuprofen for about 3-4 days and the pain felt like it has come down to the right hip joint and became less intense day by day. But i am still experiencing a kind of radiating pain from the back of the right buttocks till the calf. I am not feeling it when i am sitting or lying down but i feel it when bending over with knees straight and also when i stand for more than 5-10 minutes. Is this a serious condition? What am i supposed to do?