Am I being ghosted or is he just busy?

FYI we are not official -
He hasn’t text me back since Friday and we was texting fine and it’s now Sunday and Iv heard nothing from him, I did send the last text message on Friday but it didn’t really warrant a urgent reply or anything. It says his been online on Facebook but hasn’t been online on WhatsApp. I know he said he was out over the weekend, but my mind keeps saying to me what if his no longer interested and his ghosting you? It seems a bit extreme to go and block someone at this moment in time.
Should I see if he reaches out during the week?
Am I being ghosted or is he just busy?
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