9 days late, negative tests

Meme • I am 24 years old woman and a mom too. I Love learning new things.
Me and my hubby had a little accident during my fertile time (we use the pullout method). This is very new to me since I'm usually on time when it comes to my period. I am now 9 days and I keep getting negative pregnancy tests. I know only time will tell, but it's very frustrating not getting AF and seeing negative results. Anyway, are there any ladies out there with similar situations and ended up pregnant?