Welcome and thanks for posting your query to HCM.
First and foremost kindly relax yourself from the great anxiety
. As per your query at the 4th month of testing you and your partner both are negative for the tests done for HIV. As your partner is negative at 4th month for HIV, so also there is no chance for you to contract HIV.
But from your history it is not clear that what type of tests you had gone for HIV at 2 and 10th week. Though rapid test is acceptable at 16th week but should be again done at 6 months period for best interpretation. Still to be very sure you can go for RNA
PCR which is the best test to detect the viral copies directly.In your case the exposure was through oral sex
only where there are minimal/ negligible chances of acquiring HIV.
Hope to give you the best of the information.
With best health wishes,
Dr Sanjay K Kanodia
MD ( Dermatology and STD/ Venereology)