you are stuck in a island, you where in a plane crash, where everyone died except for you. You have to survived on what the island gave you. You are completely alone or so you think you are

You wake up in a stranded island next to the remains of the plane you where in, you can't remember anything about anything, everything hurts, you see some of the passengers dead on the plain or scattered around the island or on the water. you only have this item: first aid, 5 water bottle and 3 can fruit