I sympathise with the way you're feeling VintageCherry26. I found the 1st and 2nd trimesters tough because I didn't really look pregnant, and just felt chubby, and wasn't comfortable with the feeling that I'd 'lost control' over my eating due to cravings, and knowing that I couldn't cut back on eating because it would be bad for the baby. I usually eat well and healthily, but I do have control issues with eating (excessively so when I was younger).
However, like others have said, it's great when you're properly showing. I really like my bump, and even though I've got quite wobbly in the bum and thigh area, the bump puts it into proportion, so I'm ok with it now. It's quite a novelty having big boobs too.
I recommend getting some nice maternity clothes. I tried on a pair of my low-rise skinny jeans in my 2nd trimester thinking they might still be wearable and I had a hideous muffin top. But now I've got some really nice maternity clothes that fit well, and don't go near any of my old clothes, apart from the baggiest tops. Maybe that will help :)
pippinleaf I'm glad you're feeling a bit better, but I'm sorry that you're feeling guilty for having negative feelings. It's normal, and the whole 'count your blessings' thing is a load of crap - your feelings are legitimate, and just because you have some negative feelings, it doesn't mean you're not also happy and thankful for the things that are going well. Re: your husband not wanting to have sex, perhaps he's just a bit weirded out by the changes in your body, rather than feeling put off because there's something unattractive about how you look now. It's probably not a very reassuring comment, but what I mean is, he probably still finds you really attractive, it's just difficult for him to get his head round the changes. Maybe he just feels worried about prodding the baby during the act. Have you talked to him about it?