It's the same every flipping year!
Angst because DH/DP wants to see his mum that day. Cue lots of angry responses about how the OP is now the "matriarch" and MIL can just fuck off
Angst because nothing special has been planned for the OP.
I hate to break it to you but it's just another Sunday, we have dozens of them every year. If you need one particular day for your DH and DC to show you how much they love you then something is wrong in your home.