At first it seemed a good idea, but now it's getting close I'm having second thoughts.
Wiktionary
Have-second-thoughts Sentence Examples
The conversations were brief and the trip apparently uneventful, however Dean continued to have second thoughts about allowing Fred to dig into the matter on his own.
You'll get a better idea of how they look on your shape without making the financial gamble involved on an item you won't be able to return if you have second thoughts.
