your combination of tests (HIV Duo test at 9 weeks and 11 weeks and 3 days) should prove totally that you are HIV free, HIV Duo test is reliable at 4 - 6 weeks so you have long passed over this line. :)
Congratulations,
in Health =)
a conclusive test result is obtained at 3 months post exposure. with that being said...your test at 11 weeks - 3 days is NOT going to change.
if you are having health concerns, work with your dr...its NOT hiv related.
accept your negative status and move on with our life.