celebmum - definitely think the doc was out of order. hope you baby is doing better now...
strawberrycake - when ds1 was a few months old, he was v poorly, including had a rash that didn't go when you pressed a glass on it. Took him to dr's who said to go straight to A&E, where they eventually saw him - albeit not made to wait as long as you.
Dr was very nice but didn't think it was meningitis, told us it was probably viral and to take him home.
didn't really like to but you don't feel like arguing with dr.
next week in the paper there was a story about the same hospital - had sent a child home in very similar circumstances but child had had meningitis and subsequently died a few hours later

i felt terrible, kept wondering what if it had been my child that had happened to (and this was a big london teaching hospital with big a&e) so have found that it has given me the courage and resolve to ask for a second opinion or to double check (or check a first time if they don't do something...). Yes it's difficult when the doctor is the one in position of power in the consultation, but if you think chances are you will never see this person again, it is easier to talk to them.
I have also found that if I take in a list of written questions that I want answers to and go through it, I get taken more seriously and don't have to be as directly confrontational IYSWIM. Might also have helped celebmum as you can go throw a list of points like 'exactly how much fluid do I need to get in as a minimum over the next 6/12/24 hours' (oh he hasn't drunk that much in the last 24 hours so what do we do next) and 'if not drinking milk then can I give diarolyte' and 'what are the signs of dehyration' etc
Even if you know the answers - or some of the answers, it's really good to make them stop and give you the info (and so that you can write it down as it is easy to think you have taken it all in and then to have forgotten when you get woken up for the 5th time in the night and are feeling lousy and child is screaming (or even worse, has stopped!) and there is a record of what they have said at the consultation.