Though I am not a medical practitioner but i think everyone has seen the prescribing labels on all OCPs, saying, "The serious side effects of the pill occur very infrequently, especially if you are in good health and are young. However, you should know that the following medical conditions have been associated with or made worse by the pill.i.e. Blood clots in the legs, (thrombophlebitis), lungs (pulmonary embolism), stoppage or rupture of blood vessel in the heart (heart attack or anginal pectoris) or other organs of the body, high blood pressure etc."
So, this would be a known risk of the medication which you chose to take, so you don't have a claim against either the drug company or your doctor.