Originally Posted by Blackjack Davy:
“Of course not. Have they even slept together? She spends so much time with the Doctor I don't think they've even done that.”
The way things are nowadays, I would be very surprised if they hadn't, unless one or both of them had devout religious or moral reasons not to, and there's been no evidence of that elsewhere in their characters!
They had plenty of time while Clara wasn't with the Doctor, we've even seen them sitting watching TV together.
Personally I don't really care whether Clara turns out to be pregnant with Danny's child or not, although it has been heavily hinted at that she is.
If it is the case, as she's apparently never managed to tell Danny that she's expecting I would have thought she would have taken the opportunity to at least try and tell him when he sent the boy back through the portal, and we didn't see her try to do so.
Of course she had plenty or opportunity while she was talking to him as a Cyberman, assuming she knew then, but perhaps it just wasn't the right moment!