my last mens started last oct 5, 2017. we have unprotected sex last oct 17-22, 2017, and i have a regular period every month. it is 27-30 day cycle. It is my first time that i am delayed but yesterday november 9, 2017 i am spotting brown. and this morning my blood begins but not that heavy. Is it possible to have a period while pregnant.... i have not taken yet pregnancy test.. sometimes i feel vomitting. theres also a little cramp in my lower abdomen and sometimes i can feel pain but not breast tender but i always experience it during PMS... other than that i Have not experiencing any symptoms of i pregnant or not?