Treatment-emergent adverse events of 2 % or greater in the LNG/EE contraceptive patch were nasopharyngitis ( 5.2 % ) , nausea ( 4.1 % ) , upper respiratory infection ( 3.5 % ) , headache ( 3.4 % ) , sinusitis ( 2.9 % ) , cervical dysplasia ( 2.3 % ) , and urinary tract infection ( 2.1 % ) .