how do i make her happy

it's probably kinda weird for the man to be posting here but i just need some help here.

my girlfriend is 9 weeks pregnant and having a lot of hormonal changes i understand. she has been very emotional and always talks about things negatively. i work and dont see/talk to her for almost the whole day. when i get home i would expect her to be happy to see me, but it doesn't change her mood at all that i can notice.

whenever she is in pain or doesn't feel well, i offer any help or assistance that i can give and make suggestions (massages, make food, water, etc.) as to what i can do to help but nothing seems to help her. i try and do as much of the house chores that i have time for to relieve her of any work she has to do.

i really love her and am there for her as much as i can possibly be. i want to make this as pleasant for her as possible and need suggestions as to what i should do.