While every relationship is different, three days is enough time to consider yourself ghosted. Sure, everyone has emergencies or can come up with a valid excuse for not responding, but letting things linger for three days or longer is enough to categorise it as a ghosted situation.

Did I get ghosted or is he busy?

If hes ghosting, it starts with his response rate being dramatically slower. This means if your guy was super chatty and attentive before, and you find that his energy and personality are quite different now, its a good sign that he might be ghosting you.