There is a great deal of evidence to show that hepatic adenomas grow in the presence of oestrogen, I suggest you ask for referral to a liver specialist who will probably recommend cessation of oestrogen if it is an adenoma. There is at least one person on these boards who had several hepatic adenoma and after stopping the contraceptive pill the adenomas disappeared

There are others- like me who have a tumor on the liver and the diagnosis is not definitive although my liver specialist believes its an FNH - I have yearly scans and it hasn't grown- its 5cm in size. I don't take any hormones for HRT and haven't taken the contraceptive pill for 17 years.
I also have gastric for which I have to take daily medication( PPI )and although the doctors say the two are not related I suspect they are. On my last scan I was told I have gallstones as well. Get a referral and hopefully your mind can be put at ease
Mc