Newer home pregnancy tests detect very small amounts of hCG, some as low as 5 mIU/L. With these very sensitive tests, it is possible to test positive as early as seven days past ovulation. It is important to remember that implantation occurs anywhere from seven to ten days past ovulation and women produce varying amounts of hCG, eventually forming a pattern of doubling hCG amounts every two to three days. While it is possible to test positive as early as seven days past ovulation, there is also a good chance that implantation has not occurred yet or that you are not producing hCG at a high enough level to be detected by a home pregnancy test. For best results, it is still recommended to wait until a woman has missed her period or 14 days past ovulation. For those that just can't wait, the very earliest you should test is seven days past ovulation.
(I doubt if you will find the word "aint" in this information though.)