Capricious and nervous
Women are capricious creatures. And there is nothing that can be done about it. Nature created them capricious. But of course the capricious woman is not rather attractive phenomenon. And if the woman is pregnant, it is not the excuse and it doesn't mean anything.
Of course if you suffer from sickness, the beloved husband and relatives are going to do everything but to make you feel better. But if you feel good why do you make the impression of being ill?
Imagine you are your husband. He is worried a lot about you and is a little bit preoccupied with your present look. And he is also anxious about the future childbirth. That is why he also needs help and support.
Be attractive and try to be gentle with your husband. Of course it doesn't mean that you have no right to ask for a cup of tea at night but not because you want to worry him but because it is difficult to get up with a huge stomach.
By the way the 4-5 months of pregnancy are good for your sexual life. The hormone background may also play its role making you more nervous. But try to control your behaviour. And if you can't, then apologize after an hour of screaming and hysterics because your husband wants to read the book and not to watch drama with you.
Remember, pregnancy is not the pretext to do everything you want. Some husbands may understand everything and support you but others won't.