Assalamu Alaykum Hajrim. Thank you for sharing your dream with us, especially during such a difficult time after your accident.

Dreams hold deep meaning in our lives. As our beloved Prophet (SAWW) taught us, a good dream of a righteous believer is one of the forty-six parts of prophecy. Sometimes dreams bring us glad tidings, and other times they serve as a warning or a reflection of what our soul is enduring.

Let us look at the symbols in your dream:

First, seeing your deceased grandfather screaming and blaming you does not necessarily mean you are actually responsible for his death. In traditional interpretation, when the deceased appear angry or in distress, it is a strong message that they are in need of your prayers (Dua) and charity (Sadaqah) on their behalf. It can also reflect your own heavy trauma, guilt, or anxiety following your recent accident.
The boat in the sea filled with people is a very powerful symbol. A ship or boat usually represents salvation, safety, and rescue from hardship. Jumping from it and finding yourself safe is a clear reflection of you escaping a major danger—much like surviving your recent accident. You were protected from a calamity. Since its a positive for you, MashaALLAH!

However, your arm hurting and seeing a black snake on your left arm connects deeply to the pain you have been feeling for the last 4 years. In interpretation, the arm represents a person's strength, support, or livelihood. A black snake represents a hidden enemy, envy (Hasad), or a spiritual affliction (like the evil eye or unseen harm). Because you mentioned that you suffer from stomach burns and tremors but all your medical analyses are clear, this snake on your arm strongly suggests that your illness may have a spiritual root rather than just a physical one. It represents an unseen harm that is draining your energy and health.

Because of this hidden harm and the warning in your dream, I strongly advise you to take spiritual measures to protect and heal yourself. Please try to give Sadqa (charity) on a daily basis, even if it is a very small amount. Our Prophet (SAWW) taught us that Sadqa stands in the way of calamities and consumes many evils, just as water extinguishes fire.

I also highly suggest that you recite Darood Shareef abundantly every day. It is a beautiful form of Sadqa in itself, and Allah showers immense blessings and healing upon whoever recites it. Keep up with your five daily prayers, as they are your ultimate shield, and try to recite Surah Al-Falaq and Surah An-Nas morning and evening to protect yourself from any hidden envy or harm causing your sickness.

May Allah grant you complete healing (Shifa), ease your pain, and bring peace to your grandfather's soul. Ameen!