Hasn’t texted in 2 days…was I ghosted?

Guy I’m seeing normally responds at minimum once a day and now it been well over 48 hours and nothing. Our last date he told me he liked me and planed to see me when he gets back from his work trip Monday-next Wednesday. We have been seeing each other for a month. At what point do you assume he’s not interested. Normally if someone ghosts me there’s a lack of effort/weird vibes

Do I text to check in or just move on?