OMG My Dad Is Having Another Baby!

So I was sat at my little boys soccer training session and my phone bleeps!  Oh, its a message from my sister in law, so I take a further look as this is what it says "OMG, our step mum, has just announced on facebook that she is 5 weeks pregnant".  I'm sitting there and all I can think is WHAT?  My phone then rings and its my husband and he says have you heard, what do you think?  And I'm still like WHAT?  I don't know what to say!

Don't get me wrong its nothing new, there are always shockers in our family.  From my mum and dad divorcing, my dad getting married without us knowing and finding out on one of his visits home, to him having his vasectomy reversed and then emailing us letting us know that him and his 34 year old bride are expecting their first child together, it was along the lines of "just letting you know the reversal was successful and we are expecting our first child", we didn't even know about the reversal.

What am I meant to think?  I don't honestly know!  I don't feel sad or anything and in a way feel like its very good news for them and am happy for them.  But me, I don't feel anything really!  Does this make me a bad person?  In a way, I'm looking forward to a glass of wine this evening to let the shocker sink in!