It was at least two weeks before I could concentrate let alone feel okay. In fact I reckon it was a month at least before I felt somewhat myself and until my next period arrived before I was doing okay - and then there are other reminders - like the due date and then Mother's Day (the first one that I was supposed to be a mother). It's really hard. But life does continue and you will find a way to get through it. It's still early days now though - so be okay with the varied emotions that come - one thing I learnt about - grief is all encompassing for a while there.