Hi, thanks for your question. shoulder muscle pain is not a sign of HIV infection. The earliest an INSTI HIV test can show HIV antibodies is at 28 days and it is considered to cover the risk completely at 3 months. A negative test at 34 days is reassuring and you might consider retesting for HIV and syphilis at the 3 month mark to cover their incubation periods. If you have not already tested for chlamydia (and gonorrhea), then testing now at 6 weeks post exposure will accurately cover the incubation period. In the meantime if this is a regular partner for you, then both of you testing can be reassuring for each other and if anything is found ( most common sti is chlamydia) then you can both be treated right away.
This answer was posted on September 28, 2018.