 [ Symptoms ] period came 5 days early i have bad abnormal heartburn & am exhausted could be i pregnant  my period came 5 days early it was brightdark red and brown and lasted 3 days but only the 1st was heavy it was been a week since it started and i am exhausted yesterday i got the worst sleep i think i have ever had because i had very bad heartburn i have never had heartburn like this it is much better today but my gut is still grumbly & even after finally sleeping for 12 hours i am tired my coffee today & yesterday is making me nauseous also & i usually drink it daily [ Disease ] any woman capable of getting pregnant trying to get pregnant having sex and not taking any form of contraception is likely to be pregnant or get pregnant anytime regardless of symptoms heartburn exhaustion a change in your period and nausea could be signs of many different things these are not symptoms that only occur when a woman is pregnant even a woman who is pregnant can have other illnesses in play if you think you are pregnant get a accurate pregnancy test andor see your medical provider until otherwise proven you should always consider pregnancy as a possibility