Happyathome sore boobs struck me down with DD, and it was bad like you describe. Like red hot pokers the whole time. I found best thing was nursing bras/sports bras that were really supportive, hot water bottles and bra in bed. I also wore secret support vests under my tops for a bit of extra support. It will go after a few weeks.
As for feeling down... it is hormonal and is normal - but if it doesn't improve then talk to your GP just in case it is antenatal depression.
I had antenatal depression when pg with DD and my GP really helped, she totally understood and really made me feel better about things. It went as soon as DD was born and didn't affect how I coped after the birth at all. In fact I felt wonderful, so glad not to be pg anymore! AND is also very common, but not as well publicised or checked for as PND so a lot of women just put it down to being one of those pregnant things, but there is loads of help available. And I'm always harping on about it so feel free to ignore me... feel like it is my duty to after I really suffered during 1st pg.
Thanks Mel for the tips... I do lots of groups with DD now but they are all fairly active except for one. Think I'll have to switch a few round and do more playbarns etc. DD is a bit too little still to go round the soft play areas on her own tho, so hopefully she'll grow before I do!!