well here is some pseudo-medical advice: this new infection is probably a sequella caused by your immune system still being weak from the initial infection and once you went off antibiotics opportunistic pathogens decided to get all up in therre.

you'll probably be fine; the doctor will just prescribe more antibiotics. But if you want to play it safe go to the ER (though i hope you got a nintendo dual screen, cause you'll be waiting for 8 hours)