Please help, advise desperately needed

Hi all. I just found out I am pregnant. It was a planned pregnancy but when I told my autistic hubby he went very quiet, then said 'I'm neither happy nor unhappy ' then proceeded to cry (and I mean break his heart) (he never cries) because he couldn't 'feel the way I feel'. 

I just comforted him and told him how good and useful he is and how much I love him, but I admit I was shocked by his reaction. 

I am over the moon about the pregnancy but how can I make it easier for him? 

Thanks in advance