<prompt> All are side effects of OC pills except -Weight gainBreast discomfoOvarian malignancyDVT  <response>: parks textbook of preventive and social medicine 23rd edition. cardiovascular effects:myocardial infarction, cerebral thrombosis,and venous thrombosis. carcinogenesis:increased risk of cervical cancer with increased duration of use. metabolic effects:elevation of blood pressure, alteration in serum lipid,increased blood glucose level ,breast tenderness,weight gain,head ache and migraine, liver disorder,premature cessation of lactation,ectopic pregnancy, delayed subsequent pregnancy, foetal developmental defect 