I've got a pair of jeans and 2 pairs of cords from blooming marvellous and they are fab, with a belt (which is comfy as it's right under the bump) they are scure and don't look at all stupid. My sil is still wearing hers and her dd is 3 or 4 months old now, so they're good early on, the whole way through and after too.
They never had these when I had my others so I'm really pleased with them, cos with the other 3 I remember too well the annoying phase when you're too big for normal but too small for maternity, but these work, really. They don't have the HUGE ugly full bump panel, they've got an thick, maybe 4" elacticated waist band the whole way round and I think you can wear it either over the bump or fold and wear it under. Highly recomended.
GA4, don't panic! I remember being terrified of looking after other people's kids & finding it a struggle and wondering how I'd cope with another, but it's so different when it's your own and you'll take to it like a duck to water, honest!