Stressed out!!

Hey ladies, I'm not sure if anyone else has this problem but I'm really frustrated. A little background: with my first pregnancy I experienced extreme fatigue to the point where I was sleeping almost 20 hours a day! My husband was away for work for most of my first trimester so he doesn't quite understand what I'm going through now that I'm with my second. I'm not quite as tired but I can tell that I am definitely fatigued (I'm only 4w2d) and I know that if this time around the fatigue worsens or I get morning sickness he is going to think I'm being over dramatic or something. I've tried to explain what my body is going through but he is such a hard worker that to him, I seem "lazy". We already have a daughter who is 14 months and she is a lot to handle. Does anyone have any suggestions on how to help him understand? Or maybe suggestions for me to maybe not be as tired this time around??? I'm getting desperate. I'm tired of him getting upset because I'm struggling with maintaining the household, our energetic one year old, my relationship, a new pregnancy and time for myself