From past 3 months im feeling very low no energy always feel like sleep on bed, excessive sleepiness, when i wake up in the morning my legs from knee to foot will be paining and hands also pain no enery to wakeup. Last month consulted a physican he done test and told that VitD and B12 is deficiency so given draise and b12 tablets but even after month it is same. What can i do? Can i change doctor? Why is this symptoms?