@dlmdinia and @bpknitter53 are spot on - it depends on your situation, here’s mine.

I am very fortunate … Diagnosed 1 year ago with IDC, stage 1a, grade 1, HR +, HER2-, a separate DCIS, and another area of ADH(atypical ductal hyperplasia), no lymph involvement, Oncotype zero.

When first diagnosed I came to this site to get an idea of tests, treatments and side effects I should research.
I am an inpatient medical coder so I have experience researching conditions & the treatments, so I always stick to reputable sites, and look at the date the article was posted. Amazing how much can change in 3-5 years or less!

I had a wire localized partial mastectomy to remove all 3 areas, and contralateral reduction so I would have the same cup size on both sides. 5 radiation treatments and now on 5mg tamoxifen (Started on 20mg, severe leg cramps, so oncologist dropped to 5).

Other than all of the 6 & 12 month follow up appointments, my life is back to normal … spin class twice a week, walking 2+ miles most days. I do have some night sweats & occasional minor leg cramps from tamoxifen, but not enough to keep me from activities, annoying more than anything.
I started walking the day after surgery (1/4 mile) & 2 weeks later back at 2+ miles. I started spinning 4 weeks after radiation completed. Overall it took me about 6 months from surgery (4 months from radiation) to get back to my prior overall activity level.