Early pregnancy symptoms?

I am currently 19 days after af. I went on a hunting trip this past weekend and the smell of the dead ducks made me sick and vomit out of no where. Since then I have felt nauseous throughout the day and can't really keep food down. I also have alot of watery discharge. Nipples are a little darker than normal and a little twinge feeling in my lower abdomen. Has anyone had this feeling before a positive test!? Praying it's our month!