challenging days

I'm wary of using the word "challenging" in the title for this post, since she's healthy and as far as we know everything is progressing just right.
But it's been challenging for the two of us. We love each other incredibly, but some things we've been dealing with have been tough.
She's in some sort of physical discomfort basically always. It puts her in a bad mood, but she's good about not slinging it at me, or generally taking it out on me.
Still, some things are legitimately driving me crazy. I can't touch her, can't have any kind of sex, she basically never smiles, pushes me away all night, and freaks out any time I cook or heat up any kind of food. Or even just take food out of the fridge.
The other night she said I could be more sympathetic. I was fed up, and told her I was trying, and that she wasn't being sympathetic to me at all. She ended up getting really upset -- not angry so much, but upset.
She has a trip scheduled for a few days, and we're both actually looking forward to it. Not the being apart, but the briefly getting perspective and missing each other and not annoying each other for a few days part.
Based on things she has helped me understand since that night, I think I actually do need to be a little more sympathetic. I hadn't realized the full extent of what she's going through. She's not sleeping well, eating crackers at random hours, etc. She hasn't thrown up, but gags often on certain smells. She helped me understand that it's even tougher for he than I realized.
Still, I have the right to my frustrations too, and didn't back down on those. I told her I want her to try to keep in mind that a lot of this sucks for me, too.
Of course, we're both psyched for the end goal of all of this. Man, I hope the second trimester is better, as everyone says.