Congrats

What's it like? I'm only about 5 weeks in, but what I'd say is this: You're likely hyper aware for anything that shifts in your body right now, the first 2 weeks will primarily be an adjustment to the meds. Alongside that, likely a confidence boost, from making a big choice and getting to proceed with it. At some times, you might feel like you have a bit of "brain fog", but at others, you'll feel a better clarity of purpose in all that you do.
Fairly quickly I found my sleep patterns had changed and I was going to bed earlier. Some dehydration in the second week lead to some occasional cramping/fatigue in my legs (I tripled the amount of water that I was drinking).
Libido (and discharge) will change, for me, started by week 3.
By the end of the first month, I felt my first real budding in the breast area (nipples being a bit more erect happened by the 2nd week, but no real change til end of week 4).
Your mileage may vary