I own a 2000 Dodge Caravan. When sitting in the front passenger seat, I can hear the right front wheel clicking sporadically. At lower speeds around 10-15 mph I can't hear it, but when I get up to 30 mph the clicking is more pronounced. I made sure the hub cap is on tight to rule that out. Does this sound like a bad bearing? If so, tomorrow is Friday and I have a 4.5 hour trip on Monday for a week of vacation so I may not be able to get it fixed until I get back. Will there be any harm in driving it in this condition, and if there is any harm, what could happen in a worst case scenario? any help greatly apreciated. thank you