Liver biopsy?

About a month ago, I'd been having some abdominal pain that my doctor thought could be my gallbladder. Gallbladder was fine, but they saw a lesion on my liver. Ordered an MRI and told me it would most likely be nothing. Well, it's not NOT nothing, but they couldn't rule out malignancy. They said the primary consideration is a hepatic adenoma, but also can't rule out HCC or FNH.

Their recommendations are to either 1) do a biopsy or 2) cease all exogenous hormones and follow up with another MRI in 3 months. The latter isn't really an option for me because I have endometriosis.

I have an appointment with a GI specialist on Friday and I'm not sure what he'll recommend, but I'm really going to push for the biopsy, for peace of mind and also because I seriously can't go off my endo treatment. However, I am insanely nervous about the idea about having a biopsy. A few questions:

1. How long did it take to get you scheduled for a biopsy?

2. How painful was it?

3. How long did it take to get results?

I really wasn't expecting to have to deal with something like this at this point in my life, and I just can't stop being worried. I am so anxious and am calling all the doctors trying to speed up this process. Any words of advice are appreciated