Depression

Okay I know it's probably just my hormones going a million miles, but i have severe HG. I also have some thyroid issues going on which lead me not be able to do much at home. I have a step son and house work I should be doing but instead my fiancé does it after his long day at work. I've been nothing short or sad everyday and I've ugly cried A LOT. I feel like I'm becoming depressed and I just feel it's not the best for the baby. I'm only 8 weeks so I know this time is crucial. Am I alone? What else can I do to get happy?