Help please

Hey guys! So i had unprotected sex one day after my ovulation/fertile window(sep.16). I do believe maybe a drop of my bf cum got in me before he pulled out,i think a day or two after i had some brown discharge and it only lasted that day and then after that im having clear kinda stringy thick discharge and its alott more than normal, im now suppose to get my period in 7 days and i had sex about a week ago. Do you believe i could possibly be pregnant? I never had early period discharge and my periods come on time or a day late, thoughts pleasee🙂