1 Continue to see the doc since no one can diagnose from here. You can take a duo test after 28 days for a conclusive result or wait 12 weeks if you use any other test.
2 It is a waste of your time studying your body for hiv clues, because only a test can prove anything, so nothing is pointing to you having hiv. Try to relax until you test.
3 Likely she is negative, otherwise why would she pay for condoms? She buys condoms to protect herself from clients, so I wouldn't worry until you do your test.