Is it okay to eat normal foods again?

Yesterday I was at an amusment park and had funnel cake, pizza, lemonade, mini donuts, soda. then i rode rides. this was in 97 degree weaher. Then last night I puked and had stomach problems. Now its about 12 hours later, I have on and off very minor queasiness. Would it be okay to eat food like pizza or cupcakes now?
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