You are just getting to the point in which a pregnancy test could turn positive. It may still be too early. Most women will get a positive pregnancy test if pregnant two and a half weeks after intercourse so around day 17 or 18 after sex. But what really matters too is when you may have ovulated. Do you know what cycle day you are on? Cycle day one is the first day of your last period and you count from there. Typically it is hard to tell you are pregnant by symptoms because they overlap with other things like PMS. Have you been pregnant before?