Hi Yammy1
sorry to hear about your dad, it can be such a difficult thing. When my dad died five years ago, I did go through a kind of physical mourning, aches and pains and fatigue and I was surprised how weak grief made me feel.
But like you I get nausea and funny chest pains and sometimes in my arm too, getting it checked out is probably a good thing
In fact it happened again to me today, after a long period of not happening, I used to have it more often before I started HRT and was starting out on the menopause adventure. But I have just changed to evoril patches , so I am putting it down to that. I have heard it described as being like morning sickness ( never had children so not had to suffer it myself) but that and a general weakness seems to be a menopause thing.
not very comforting but get yourself checked out and take care. Now is the time to be kind to yourself and I am sure the ladies on the forum are full of wise words to help you through.
cheers