Liver tumor and birth control lawsuit?

i took the BC pill Ocella for 4 years. stopped Feb 2010 to concieve. i got pregnanct in Nov 2010 and i am due Aug 2011. i went to the emergancy room a couple weeks back for severe upper abdominal pain, and found out i have a tumor in my liver that is most likely caused by taking birth control(can find out for sure til after pregnancy is over and its been removed) if this is caused my BC, would i have a case to sue the ocella company? this tumor has caused me alot of pain and there is a high chance of it rupturing and hemorrhaging, and could potentially cause death to my unborn child and i.