We do here in the USA and it is this Sunday. We will be celebrating with my MIL as my own mother is sadly passed.
I love in the UK they call it Mothering Sunday, it just sounds more lovely. I think there is is always there it is always three weeks before Easter day. That still has Christian roots, ours in the USA is more rooted in commerce and trade, which is no surprise :)
Glad you are back.
Thank you so much @donnadavisart for your kind words :) Ah, in Poland it's getting more and more commercialized too :)