This is a valid reason. No need to make up nawafil fast.

Moreover, Nawafil are not obligatory fasts and one can break them without making them up again.

please advise me on this; I broke my nawaafil fast by taking medicine and food after it was past mid day, when I started feeling restless and experiencing the signs and symptoms of malaria.

Fasting | June 2, 2016 5:53 am
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The question is regarding fasting in Ramadan, I have severe acid reflux after eating, the food always refluxes, In this case, If I fast before offering fajr prayer, It may disturb my concentration in prayer, only for this condition, Can I fast as soon as completing fajr prayer?

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I have a question regarding to the days that I didn’t fast during Ramadan. I made up for 7 days but I’m not sure if it should be 8. So my question is, do I have to fast another day or is this wrong as it’s bidaa?