My parents where shocked with DS1 as hubby and I hadn't been together long and we didn't think to tell them we were ttc. They knew we were just letting nature decide when it happened for DS2 they weren't ecstatic but they weren't disappointed. I'm not sure how they felt about my 3rd pregnancy but my mum was sad when we lost it. With DD they were happy My last pregnancy my mum was surprised but in the same breath I told her I wasn't going to keep it she was supportive either way.
The rest of my family were pretty blasé to say the least. I posted on Facebook not long ago that I had just got some news that made my day (a friend was utd) and one of my aunties unaware (I hope) of my recent termination asked if I was pregnant AGAIN. Yeah nice.