Is he ghosting me, last time we spoke he was receptive?

I matched up with somebody in a different city, so we spoke via text for a week to get to know each other and we were on the same page about it, (taking it slow, getting to know each other and seeing where it leads) we sexted a couple of times too and it was fun. Our last message is us wishing each other a good night and for me to get home safe (I was out) with a smiley and a winky face. Now he hasn't been online in 4 days and hasn't reached out.

I'm not initiating a conversation because I already did so last time and we usually initiate equally. He doesn't have social media so I don't know.

Is he ghosting me, last time we spoke he was receptive?
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