We all react differently and need different things, but universally we are all in shock and overwhelmed especially with learning all there is to know and then making decisions. And that doesn't even address the emotional roller coaster ride.
I have been pushy, pushy asking a thousand questions. As much as possible, I type up everything on my laptop. I type the questions for my doctors and print them out and sometimes even send them by email a head of time. At appointments, I type directly onto the documents on my computer. When my husband goes with me, he has a hard copy so he can take notes. Even with all this, I miss some things or just can't remember. It's like taking a graduate course without getting any credit for it but the post test is unreal.
So absolutely do not let anyone rush you and get as complete answers as you need and write everything down. I have a notebook full of just "my breast cancer" stuff, everything from research papers to pathology reports to a timeline of the diagnosis and treatment to a list of all the drugs I got during surgery. I am still working on a second opinion