If a person vomits intentionally, his fast will be broken. But if you vomit unintentionally, your fast will not be broken. It is narrated on the authority of Abu Huraira ( may Allah be pleased with him) that the Messenger of Allah , may Allah bless him and grant him peace , said : But the one who vomits unintentionally has no qaya . ”[ 1] If a person feels a tingling sensation in his stomach , as if everything is coming out from inside , then it will not stop him. Will try to stay normal. Don't try to figure anything out on purpose. There is no harm in going out on your own and fasting will not be wasted. [ 1] Abu Dawood , Chapter: Fasting , Paragraph: Intentionally vomiting ; Tirmidhi , Chapter: Fasting , Paragraph: Description of Intentional Vomiting.