Broken condom, insertive anal sex, risk of HIV

Hello there.  I'm a 29 year old bi male.  I recently had an encounter with a transsexual where we engaged in insertive anal sex (I was the top).  The condom broke (I do not know how long I might have gone exposed), and when I noticed, I immediately pulled out and cleaned myself off in her sink. I did not ejaculate inside her.  I was absolutely terrified, and still am.  I managed to convince her to come in for a rapid HIV test two days after the incident and we both tested negative.  I asked her if she had engaged in any other activity with anyone else in the past month or so.  She said yes, but no unprotected anal, although, she said she did engage in unprotected oral.  I am absolutely terrified, and I am unable to think of anything else.  What is my risk in this situation?  I know my only worry is that she might be in her window period.  Please help.

[Zedicus]

depends totally on whether she is hiv positive or not.. if she is.. anal sex is a bit more risky than vaginal sex... all in all ig you had a risk, better to test your self at 12 weeks to get a conclusive result

[mexicanamerican92]

As I mentioned in my post, we both went in and got tested.  She was negative.  My only concern is the window period.