Welcome to the Forum.  I'll be glad to address your questions, as well as to comment on what may be a misperception or two on your part.  Before I do, let me also congratulate you on  using condoms- they will protect you unless they are used incorrectly or you have the misfortune to have one break which occurs about 1% of the time they are used.

Without knowing more details, I would classify both of the exposures you describe as being relatively low risk.  They appear to have occurred in the U.S. where HIV is particularly uncommon among women (less than 1/2 of 1% of American women have HIV.  The average risk for acquiring HIV from a single episode of unprotected vaginal sex is about 1 infection in 1200 exposures.  Thus putting these two figures together, there is a 99.9% chance that you did not acquire HIV from either of them.  I should also add that the fact that partner A was menstruating at the time does not change the risk for acquiring infection.

Your test results with respect to both exposures are conclusive.  The 4th generation, combination HIV antigen/antibody tests provide completely conclusive results 6 weeks (42 days) after an exposure.

Finally, I will also pint out that from the encounters you describe, your risk for acquiring other STIs, chlamydia in particular, is at least 100 times more likely than any risk for HIV.  Still not high but worth getting checked.

I hope this information is helpful. EWH

As you note, that was your 3 Rd question.  Thus this thread will be closed shortly without further responses.  Take care.  EWH