Just need some clarity if I’m overreacting - recovery

This community has been so incredibly supportive and helpful during my top surgery journey, so thought I might ask here if I’m overreacting about this. This might be a bit long.

Basically I’m almost three weeks post op (had surgery 18th March) and I’m feeling pretty great. Barely any pain, not on any meds and have all my dressings removed and no more post op binder.

My energy levels and mobility have also been much better so have been able to drive a bit (just short distances), go to the shops for a couple things, make food for myself (because no one is helping me with that anymore) and go visit friends (at a cafe and their house) but still taking it easy and resting when I feel I’ve overexerted myself.

Anyways, because I’ve been able to do some more stuff for myself, my Mum (for context I’m 22 and live at home with two parents and two younger siblings) has been asking me for some help. Like going to the shops for food, preparing food for easter, and then also made me go on a walk today where I got really tired.

She also said that I seemed a lot “worse” in healing than I have been, but I’ve literally just been tired from having to go to the shops for her yesterday. But because I stayed at a friends house on Friday night (literally just watched movies then slept) I think she thinks it’s from that and I’m being selective with where I’m putting my energy and just not wanting to help (which I guess in a way is true but isn’t because I’m lazy, it’s literally just that I’m recovering.. idk)

Anyways she’s just said I need to help make dinner, and I said I’m actually feeling really tired, and also I can’t reach anything or lift anything. So I calmly explained I wasn’t able to help. And she got annoyed and lowkey pissed off at me saying that I need to help and she’s not asking much for me. But idk I’m literally not even three weeks post op!! If I’m feeling tired I should be resting right???? But idk, she’s very good at manipulating and gaslighting me so I feel like I’m starting to doubt if I’m being unreasonable. But idk it just really stressed me out and upset me