i have a cycle of 28 days i bleed for 6 of them, i got my period on october 16th last month..my husband and i had unprotected sex on october 31st..i have now came on my period on november 3rd 8 days early? Infact its not like my regular period, the flow is much less, and the colour not as bright, its day 4 of my period , and theres barely been anything there all day..could i possible be pregnant? We had our last child 15 years ago..or is my mind playing tricks on me?