Could this dream possibly come true or would it just be a coincidence?

So last month (May) I had a dream about my grandpa dying. He is 90 years old and hasn't been doing very well lately so I've been really worried lately. But the weird thing about the dream was that in my dream I was thinking to myself "I would've never known my grandpa was gonna die in June." I had this dream in May so I thought it was weird that I dreamt him dying in June. This whole month I've been paranoid about him dying and there's only 7 more days of June. Do you think he could possibly die within the next week? If he did, would it correspond with my dream or just be a coincidence? I'm so scared.