Welcome to the forum. Thanks for your question.
The standard tests, including the 4th gen ("duo", "combi") HIV tests, are extremely accurate, so you can be sure your partner wasn't infected. Once you knew of her result, there really was no reason for you to be tested -- although this might have made sense based on other risks in the past.
In any case, your test results at 28 and 30 days were 100% reliable, even if your partner had had HIV, and there certainly was no need for the third test at 63 days. If the test is negative, it is 100% certain that neither HIV antibody nor p24 antigen is present. Your negative results are definitive.
For more detailed information about HIV test reliability at various times after exposure, see these discussions:
http://www.medhelp.org/posts/show/1704700
http://www.medhelp.org/posts/show/1855891
http://www.medhelp.org/posts/show/1891685
So you can definitely "put this episode behind" you, have a committed sexual relationship, and start a family. No need to worry about HIV.
Best wishes and happy holidays-- HHH, MD