Hi Last Periods Was On 16 Th Oct And Had

Hi Last periods was on 16 th Oct and had unprotected intercourse on 22 and took pill within 6 hrs and again had intercourse on 23 , 24 , 25 but used withdrawal method n didn't ejaculate and on 26 th and 27 th I got spotting very little same like periods is it normal ......or should I go for test