On Sunday, May 5 So The First Time I Woke

On Sunday, May 5 so the first time I woke up with a nauseated stomach feel like I was going to throw up but didn’t . On Sunday the next day I woke up again with the nauseated stomach and felt like I was gonna throw up but didn’t . I kept waking up the rest of the week till today May 9 the nauseated stomach and feel like I was going to throw up but never do throw up . I don’t know why, this is never happened to me. I know 100% I am not pregnant because I’ve never had a man in my life