@AllotmentTime I had a full node clearance in early October last year. I was told not to lift anything, including my then 5 month old baby, which was frankly ridiculous (“can you get someone to give you the baby on your lap for a cuddle for 8 weeks” like I was a doting aunt and not her mother ffs) so I continued to lift her but nothing heavier. I did have issues with seroma, not infected just bulky, but after it was drained the second time it never came back.
I used to lift prior to this shitshow, including when I was pregnant, so I was also v upset about the lymphoedema info. I sought advice from a specialist PT and I have since incorporated weights back into my life. There are certain lifts/movements she’s advised against but they weren’t ones I did a lot of anyway (mainly time under tension like planks - which I can’t do well at the mo anyway with the diastasis recti that I never fixed because I found out I had cancer when DD was 16 weeks and that took over). Like a lot of the cancer info, it seems very one size fits all - assuming women aren’t interested in resistance training and are happy to do “arm exercises” as a workout. No shade on women who are happy with that, but that’s not all of us. I have almost full ROM back on that side, I know I’ll get it all back eventually I’m just very stiff in my upper body in general.
My mum also had BC at 37 like me, had lymph node clearance too and she uses her arm and gardens/DIYs etc without issue - the only things that have ever caused her arm to swell over the years are horsefly bites and she gets antibiotics v quickly if that happens.