What are the chances i am pregnant?

im delaying in my period by 2 weeks,im worried sick,i had unprotected sex,4 days after my periods ended,my boyfriend didnt *** & even if there was pre*** he peed before that,i heard that reduces the sperm count,i hav always been irregular on my periods & i didnt have implantation bleeding nor i feel nausea or morning sickness,my tummy isnt bloating,i dont hv back ache,i dont feel tired very easily either,i hv exams these days & have some other issues too,i dont know if its stress causing this,im drinking parsley tea n vitamin C's since 2 days but i dont know when they will start working...i need help,serious answers only...please!