I've been a bit up and down hormonally right from the start. I'm 18+4 at the mo and still have this to some extent. I also can relate to the general feeling of not being interested in normal stuff, but I think this for me mainly relates to me being tired and only feeling like I have enough energy (physically and mentally) for a limited amount of 'stuff'.
I also had a bigger tummy at about 10 weeks, not a bump, but just really uncomfortable in normal clothes, ended up secretly unbuttoning jeans when sat down etc!
One of the things that I hated about the early months but that is a bit better now is that everything tasted and smelt weird. I had a really strong sense of smell, and anything I ate tasted odd, and as a real foodie this was a bit cr@p really.
As others have said, everything is normal and nothing is normal, as everybody really is different and we all manage things differently. I am usually quite upbeat and so do struggle a bit with the 'blues' that I have at the mo, as I just feel a bit low and sorry for myself, but am not used to feeling this way so am being a bit pathetic with it really!
I also struggled with the waiting for stuff. You find out you're pregnant and it's life-changing and you want to be pro-active and 'do' stuff to prepare for this massive change, but there's so much you can't do as things take time. E.g. waiting for 12 week scan was interminable, and now am waiting for 20 weeks and it also feels like it's ages away. To be honest, apart from taking folic acid and not drinking, the only thing that I did immediately on finding out I was pregnant was join mumsnet as I realised I knew nothing about pregnancy or babies!
So I can sympathise, sometimes I feel special and excited about the life within me and sometimes I feel ambivalent about pregnancy in general (although I'm really happy to be having a baby). I do also find the constant worry drags me down a bit, as it's not stuff that I can 'fix' which is my normal approach to things that worry me.
D