Hi.
If you buy a pregnancy test, buy the one for early results. There are some tests that detect pregnancy earlier, because they are more sensitive. Wait a few more days and take it again. You should not have to wait another week (if you are anxious). When you get a positive reading, and you have taken the test on the early side, your test result for positive might be very faint. I am pregnant with my fith child, and I took a test when I was 2 days late, and the line for positive was VERY faint, but it still meant that I was pregnant. God Bless.