Hi, my Mom is 84 years old and quite frail. Last night she had an episode of feeling very faint and weak, nauseated and had a painful urge to urinate. When she tried to get up, she managed to grope her way to the hallway and fell, where she lay for a couple of hours. Last week we had her urine tested and were told it was clear. She had a similar episode last week and we called the ambulance - they sent her home after lots of testing showed nothing out of the ordinary. We have no idea what to try next.