I flew from Beijing - San francisco -Cleveland on Jan 5. I had checked in two bags when leaving Beijing, collected them in San francisco after I entered custom, then checked in them to flight CO1637 for Cleveland. However, I could not find one of them at Cleveland airport. This baggage is filled with daily necessities, medications and clothes of mine. I can't image if I lose them. I had contacted with continental pensonnel at the airport and was given a ref number. But after two days the continental still can't find where the baggage is.