if you are having unprotected sex with a person capable of fathering a child you can become pregnant. simple as that. spotting may or may not be a signficant finding nor the exact timing of your menstrual cycle. if you don't want to be pregnant then you know what to do to prevent it. if you do want to be pregnant you also know what to do. there is really no way to determine if you are pregnant by posting a brief scenerio on-line. you would need to take a home pregnancy test and/or see your medical provider.
my last period was <negative_smiley>23. i had sex on <negative_smiley>13 &<negative_smiley>14 i started soptting <negative_smiley>26 could i be pergnant?