Is my husband being fair to me?

I am 8 weeks pregnant and nauseous at night (instead of the morning) and tired ALL the time. My husband has been stressed out at work very badly and has a conference to go to for a week starting tomorrow. We have to do Christmas shopping and I haven't been doing much cooking because it's all I can do to drag myself home at night after work and lie on the couch. My husband has been yelling at me for forgetting laundry in the dryer (that is clean and dry) and lying down all night instead of helping him do things. He hasn't actually told me anything that needs to be done and he's not seemed to be doing much either. However, he is stressed out that I told him I would do some Christmas shopping while he's gone and that I would wrap gifts and do some cleaning in the house. He thinks it's not going to get done because I have no energy and feels like he has to do it all himself...which is not true. We're leaving for Christmas shortly after he returns. Anyhow, it seems to me he's being wildly unfair for yelling at me for these things. Anyhow, how do I deal with him in this state he seems to be in?