It seems like you might have morning sickness symptoms, even if not pregnant. Feeling unwell throughout the day, aversion to some food, weakness, and crying without clear triggers are typical indications of this. Sometimes, it can result from hormonal adjustments or stress build-up in your body. Attempt consuming little portions frequently, keep yourself well hydrated and get plenty of sleep too. If these signs persist, see a gastroenterologist who will help rule out other underlying issues.