Is he actually sick or is he ghosting me?

I went out with this guy on Friday and we've had 2 dates since then and everything went sooo amazing. Super sweet guy, same humor, great texting, the whole package. However, on the day of our third date, he got sick and I told him to stay home despite his objections. A couple of hours after that conversation, he stopped responding and I assumed he fell asleep because he had a headache. The next day, I asked him if everything was alright and he said that when he gets sick, he gets reclusive and has a hard time responding and didn't text again the entire day. The next day, I sent him a text saying I was thinking of him and that I hoped he felt better with no response. Since then (3 days), he has not texted me and I haven't texted him. Is he actually sick or is this him ghosting me? I see him active on instagram but he hasn't texted me and I don't know what to think )-: The day of our third date, his energy was still there and conversation wasn't dry at all so I don't think there were/are any signs of ghosting but I just want to be sure.
Is he actually sick or is he ghosting me?
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