Hi @Schwen,
Welcome to the forum. Plenty of warmth and advice always available on here. It's all so scary and horrible at the start, Once you have a plan you will feel a little more in control. Everybody is different with their treatment plan and the way they respond to it.
I had a lumpectomy. re excision for better margins and full lymph node clearance. There were 5 out of the 24 with cancer in them so got the works as well. Highly ER and PR positive so am on Tamoxifen.
I began chemo 6 weeks after surgery. Same chemo regime as @Sister. 4 weeks after that 30 x radiation. All told from surgery to the end of rads it was about 8 1/2 months. I did alright with the treatment and most likely would have been able to travel straight away. It just depends on how you get through and unfortunately nobody can tell until you start.
No question is too long or too trivial. There is no judgement on here so keep asking, keep talking we all understand how you feel.
All the best
xoxoxox