Hi and welcome,
If you have any queries, just ask! You have a great attitude which my MO says definitely helps. Chemo is doable, but it's not a walk in the park. I agree that exercise helps throughout treatment. Even on my worst days I went for a walk or used the treadmill in the gym instead. Chemo can cause a bit of weight gain, but it soon comes off again.
When you have surgery you will get the pathology on your Stage & Grade. I was stage 2A, grade 3 (aggressive). However that was 4 years ago and life is back to normal - or new normal - and I feel great. (I had bilateral surgery/chemo/rads in 2012).
We seem to take a year off normal living with treatment, but there is light at the end of the tunnel. Keep up the wonderful positivity! One day at a time - don't look too far ahead - it passes surprisingly fast once you are on the roller coaster! Big hug. x Michelle