Dreams are not prophetic (unless you believe them). Dreams are just pictures of your recent or long-term psychological feelings. It is easy to understand that my husband broke his leg while driving, that is, he was worried that his husband (or on behalf of other relatives) would do something he regretted because of his recklessness. In the back, I dreamed of your grandfather's tombstone and urn. This has to be combined with your own situation. You made it clear that you were awakened by fear, which proved that you were afraid in your dream. Explain that you have a fear of something (or someone) in your heart. Why? Think for yourself. This is just an explanation, because personal circumstances are different, and a dream has many explanations.
The other is to face the problem with a normal attitude in reality. There will be less extreme emotions in dreams.