Feeling Sad 😢

I'm 19 1/2 weeks and already gained 19lbs!!! My pre pregnancy BMI was over average, so technically according to all the "charts and guidelines" I'm already wayyyy above what I should be through the entire pregnancy! This is my first baby, and I'm seriously been crying all morning. I know this sounds so superficial, and I apologize for the rant, but I keep reading about all these woman who've hardly gained anything and who works out daily, and I just don't have the energy or will power. I work 40 hours a week at a very demanding fast paced physical job, and by the time I have a day off, I am so drained! 😞 And it doesn't help that I literally am constantly hungry! if I allow myself to feel hungry I get nauseated. Please someone make me feel less like a cow! 😢I feel like I'm never going to lose the weight, and I'm already getting stretch marks!