Respected Sir/Madam
I hope this message find you well. I am writing to inform you that I am experiencing severe stomach pain and will be unable to attend school today.
I kindly request you to grant me ____ days leave to rest and recover. I will keep you updated on my condition and inform you if I require additional time off.
Thanking you for your Understanding and support.
Sincerely,
(Your Name)
(Your roll no)
(Your School name)
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