27.no birth control.35 day cycles-never late.on day 39.i thought i had 2(very) faint +, but then had a neg. could i be pregnant or evap ln?many sympt.

Retest blood w/ doc: The pregnancy hormone, hcg, rises as a pregnancy grows, and falls if the pregnancy fails. So if you were having a miscarriage, the pregnancy hormone level would drop. There is also such a thing as a "chemical pregnancy" which is a miscarriage that happens so early, that there is never any visible gestational sac by ultrasound. Lastly, you could have a faulty home pregnancy test. Re-test by blood.