i had sex right after my period finished and we kept using the pull out method . but now im worried that i might be pregnant. i been feeling faint and slow , im feeling nausauted and sleepy,moody, my headhurts more than the usual. i took a pregnancy test and it came out negative, so i went to the doctor and took a blood test, and it also came out negative, this is where im more confused can it be possible for the blood test to come out negative. i feel like im pregnant but all my test been negative ,mind you i been pregnant before but this doesnt make sense to me on why i feel pregnant but the test dont show it.