Welcome to the Forum and thanks for your question.  Thanks as well for checking on our past replies to other clients- that it part of the reason we have them posted- to serve as a resource for others.  This reply will confirm what you have already learned from your review of past replies.  Receipt of masturbation, even when in the course of the activity a partner's genital secretions are transferred between partners, has never been shown to result in transfer of HIV.  You are not going to be the first.

In addition, your 8 week and 3 month test results should be believed.  The results of 4th generation tests obtained more than 6 weeks after an event are conclusive.  I am likewise confident that your qualitative RNA PCR test will be negative, providing you with further assurance that you were not infected.

Trust your test results.  there is no reason for additional testing and no reason related to the event described above to abstain from unprotected sex with your regular partner.  I hope that her symptoms will improve soon.  EWH