Not married, not pregnant…but have been nauseous before. Licking a lemon is a common technique known to help prevent nausea. Sometimes I drink lemonade and that helps me feel better. Use of ginger and peppermint are other remedies. I’ve included 2 links below that contains remedies for nausea. Hope you find something that works for you. And, congratulations on sister’s pregnancy. May Allah bless her with a beautiful and healthy baby, Amin:)