Hi This Is Sumit Of Age 23 .I M Having

Hi this is sumit of age 23 .I m having trouble in sleeping in night from few days my whole routine of sleeping is changed I stay awake all night and sleep during the day time .So I just want to know that is there any medicine (excluding the sleeping pills) which can help me get sleep faster so I can come back to proper sleeping routine to which I can use for 3-4 days and should notgive any side effect.