Any suggestions please, I have kept 2 puppies from my last litter and they are 5 months old now I have done all the proper socialising but the bitch pup is still very stressed in situations away from home to the point where  am now at a lose as to whether carry on or give her a break ,I have not overdone it ,  and she is very food orientated at home but refuses anything outside our home boundaries,I have made a special point of taking them out as we live in a rural area but nothing seems to help, I have never in 30 years had a pup as stressed when going out. I had thought about trying her with some zylkene but hate giving them anything ,her litter brother is fine ,mums great nature too,normal birth and rearing ,she is a stunning girl but feel she may not make the show ring and I haven't had a dog for showing for a while due to illness etc .Am I worrying too soon ...probably yes but as I say I have never had a dog as bad as this. Thanks

As you will know, littermates are nightmares. I recently read a very interesting article about American guide dogs, where they did an experiment of placing two pups with each puppy walker. Even if both were just as outgoing when they got there, on ALWAYS ended up more shy and failed the training, which is why they stopped placing more than one pup.
http://paws4udogs.wordpress.com/2012/03/30/littermate-syndrome/
This is exactly what I have found myself as well, having had to keep littermates several times.

If your pup is that stressed when going out, you have to take it even slower. I have one dog like that myself, even at aged almost 5 he runs and hides at the sight of collar and lead. I don't know what you have been doing but for pups like these, just going into areas with lots of people (we live in a quiet rural area as well) can be too much. I once took this dog of mine to a car boot sale when he was about the same age as your pup. He just sat down and shook with fear, would not move one step, and I thought I'd never be able to get him back to the car (big dog). I would instead take it slower and do things like find a quiet pub or cafe where you can sit at a table outside and do nothing but watch the world go by with the pup. Or park your car near where people are and stay in the car with doors open and pup on your lap or next to you, depending on size. And Zylkene won't harm, but can help -absolutely no reason to not try it out. Calmex is good as well and is only needed an hour or so before you are going to do something.

Finally when it came to my own really bad pup, I found there was a problem with the litter in general. Of the 10 pups, four ended up with really severe problems, and none will ever be 100 % normal, we have just had to accept that. Four are extremely good  and the other two just normal, so it was most odd indeed. None will be bred on from, mine are both neutered as are most of their littermates. I mated the same bitch to a different dog 2 years later and that litter ended up perfectly normal, an absolutely huge difference -yet I did nothing different in the way I treated/socialised them. The two things that were different was the stud dog and for the first litter the bitch was vaccinated at the same time as mating. Whether either, both or none made a difference I don't know. In any event it has had to be the tiniest steps possible for those dogs, still hard work 5 years later, but there are improvements all along.

One of my retrievers was very nervous from a puppy. It took a long time for her to really enjoy life, but it was helped when I got another puppy when she was 15 months. She was a bit scatty all her life and was never particularly confident. We had to take things steadily with her, not too much stimuli all at once, but to a degree ignoring nervous behaviour. Gradually she began to realise life was quite nice, but for years taking her anywhere new was hard work

Thank you both for your input, the article was very interesting as now with hindsight this may well be true a while back I kept littermates and one was more nervous than the other  just put it down to her nature , (Different breed )I must say she was nowhere near as bad as this girlie,but makes you think .
I will try splitting them up more and try some calmex see if that helps and take her in very small doses, she is such a lovely girl at home,sometimes I think it is miles harder to get a shy dog to come out of itself than an over the top one at least with one of those you feel you can do more with them  .maybe its just me !Thanks again