A jet lag is killing me for six hours

I arrived at this town from Japan on March 5. I have been suffering from a jet lag for four days. In the daytime of this week, I put myself in a dream that may be a real. I cannot  distinguish a dream from a reality. I lost six hours of this Saturday. I got up at 7am, whereas I went to bed at 10am, and awake at 4pm on the same day. A sleeping will be killing me for two weeks.