I agree with the also buying yourself a present for Fathers Day. I try to make sure (provided funds allow) to buy my mother a present on Fathers Day, but I have renamed it to Parents Day LOL.. When my dad was alive he took my eldest brother (then 2) out with him to buy Mum her first mothers day present that he picked out himself.. She got a toy truck and a bag of lollies!

I think you should definitely get something for yourself for mothers day (or maybe someone can help B find something for you), you deserve it.