 [ Symptoms ] could i be pregnant even though the hpt i took was negative  my husband and i have been ttc for 6 months usually a week before i start my period my breast will get really tender however this time that has not happened i am 3 days late my last af was 1126 1129 i have also had some diarreah and nasty tasting burps off and on the past week i took and hpt last night and it was negative could it be wrong [ Disease ] every human on this planet has e coli in their intestines this is the part of our normal intestinal flora we do not however have the 0157 strain that causes life threating health consequences unless we got if from a contaminated source bloody diarrhea is not likely from too much olive oil so i would encourage you to seek medical care there are many other bacterial forms of diarrhea that can cause this insurance or not your health is worth spending money just like you would spend money to fix your car or your computer or cell phone