Neither.
Follow your instinct or gut feeling.
The mind is logical, and the heart is emotional but instinct or the sixth sense is magical. Your instinct has developed in you since ages. It’s inbuilt in your genes. The most feeble voice which sometimes tells you ‘Don’t go out, it might rain ‘ and then your mind shuts that voice down and presents logic regarding weather forecast or your heart says ‘but she called, right ?’.
Always follow your instinct when in doubt. We all have it. To recognize it, just think of those voices which are feeble but sans logic or emotion.
Let me give you one more example. You are going some where and in the middle of performing a task, your mind asks you ‘What’s the time ?’. A feeble voice says 1:10 PM. You look at your watch. Bang! 1:10 PM exact. It happens to all of us and we discard it as luck or what ever!