It doesn’t seem likely that a lip injury is somehow connected with the blood in the sperm and sore throat. A sore throat usually indicates some type pf infection but a simple kiss and a lip wound can’t cause throat infections. Deep (French) kissing, however, can cause throat infection. Blood in the sperm can indicate a genital-urinary infection and should be checked by a urologist. In sum, it doesn't seem likely that you can get a genital or urinary infection by kissing or lip bite.