My DS is 3 and a half and recently will spin in a circle (at home, don't think I've ever seen him do it out) for a little while (probably not all that long, maybe less than a minute, certainly no more than two minutes) and then will sit down saying "I'm dizzy!" Or "the house is falling down!" Or similar.
He is doing it more often recently, maybe once or twice a day, not every day but we've been at home more with it being the summer holidays.
Does this sound "normal"? For context I do worry about autism, but I am an anxious person.