Recently 9 days after my monthly flow,I had an unprotected sex but he poured in me,4 days after,my nipples became sore and painful when I touch them. My pubic region pains me like its contracting and my abdomen is enlarging.I am also becoming weak,lazy and dizzy these days. Please am confused because I don't know if I am pregnant since its my 1st time... Thanks

4 days after intercourse would be too soon for you to have any pregnancy symptoms.

4 days after sex, there are no signs what so ever, The sperm would have just reached the egg at this point. Perhaps worry has you feeling things you may have thought should be happening