Welcome to the forum. By chance, your question is similar to the one immediately before yours, which I answered just a minute ago. Take a look:
http://www.medhelp.org/posts/HIV---Prevention/Hiv-scare/show/1926401
This was a zero risk exposure in regard to HIV. Condoms work in vaginal sex, and unprotected oral sex carries little or no risk for HIV (see the other thread). Oral-nipple contact carries no risk at all.
To your specific questions:
1) This was a risk free exposure.
2,3) The negative PCR tests are aroune 90% reliable evidence you weren't infected. The other tests were done too soon. For 100% definitive results, you'll need another test at 4 weeks or more after the exposure. It can be a stand-alone antibody test: the combination of negative PCR (or p24 antigen, in the duo test) at 8-15 days plus negative antibody at 4 weeks is definitive.
I hope this has helped. Best wishes-- HHH, MD