Hi, I went through your query. It depends on the type of infection. If there is an abscess, drainage may be required. Otherwise a full course of antibiotics should be sufficient. Test for meningitis is preferably done before starting the antibiotics. But even if the test was done only a few hours after the dose the reports will be quite alright. Kidney infection is not sexually transmitted. But bacterial meningitis can be transmitted through droplets from nose. But since your boyfriend has a negative report a checkup does not seem necessary. However if you feel unwell with even just a fever you can get yourself checked. Hope this helps.