Hi, Im 34 years old. Ive had my tubes tide for 11 years. I m late starting my period by 2 days. had sexual intercourse. spotting durning intercourse. 1 time, nothing since. I ve been getting nausea, ligth headed, headaches, tender abdomal and sensitive to smell. I took a home pregnancy test it said negative. could I be pregnant or is it a sign of something else?