Q&A On Possibly Pregnancy

My Last Period Was The 26 Of Dec My Ovulation Day Was The 9th Of January Which is The Same Day I Had Unprotected Sex With My Boyfriend A Day Later I Threw Up Which Was A Sunday Night I Talk To My Friend Who's Also Pregnant She Told Me To Do A Home Remedy pregnancy test With Bleach And I Did It Foamed And Frizz Up Which Means Your Pregnant But I Took A Real Test And It Was Negative But For The Last 3 Days I Have Been Having Light Cramping What Could It Mean ?