Gut Feeling
Laura just wanted to spend all of her time with Jack, so she often went to the bar he worked at to visit him. She did this because she spent some more time with him, but she began to see hints after doing this that Jack might be cheating on her.
Feeling Uncertain
People at the bar began to look at her strangely, but Laura ignored her own suspicions. She should have gone away with her intuitions, as we all know. She learned later that her feelings of uncertainty were more than just feelings.