ghosting?

I have a question. if someone really didn't want to talk to you anymore (meaning ghosting you) without reason why, would they block you in every possible way. such as text, Instagram , Snapchat etc? I have a good friend since elementary whom I haven't spoken to in 2 days. we always talk everyday. as of right now I am not blocked on Snapchat and such so, but they are active on it. is it possible I'm still being ignored and ghosted?