Worried friend injected me with poison while i slept.woke up very nausea but also drank night before. happened 2 years ago. sick for 1 day. unlikely?

W.D.K.Y.M.Y.S: As the old proverb says: what doesn't kill you makes you stronger. There is historical precedent for this; mithridates iv, king of pontus in asia minor, protected himself from poison by ingesting sub-lethal doses of toxic material in progressively larger quantities. Nausea is too common to look back two years for a cause.