Too much time between to conceive?

My so and I did first mutal mastubation on april 28th. No fingers or penis enterd. He is worried his pre-cum may have got in me. 
Got period from april 28/29- may 2-3. 
Ovulation was prediected for may 9-14th. 
So total of alomst 2 weeks between incident and ovulation prediction. 
I took a test at exctualy 3 weeks latter from april 28/29 at drs. Was neg 
Start in 7 days.  
Ao in all a total of 17 days tween pre-cum and ovulTiom 

Vote below to see results!