Being happy

I have been trying for years to have another baby and now that am pregnant with my second baby my mother is upset with me for even having another baby. Am wishing that she would be happy for me but its like all she thinks about is what I can do for her and thats it. Why must she be like this? Shouldn't she be happy that she is going to be a grandmother again. I would give anything for my dad to be here to be happy for me but he has since passed on.