Well this is going back a few year now but when my 2nd child was born we had our 3yr old son with us not by choise but because his sister decided to come 2 weeks early so had no family up here to help out but lucky for us we had a midwife in training who was ment to be doing her 1st delievery but instead she got the job of baby sitting. As i only had a 4 hr labor it wasn't so bad they put bob the builder on for him and he was happy to watch that near the end they took him for a walk to see other new babies so by the time he came back his sister had just come out. he doesnt remember anything about it so I dont think it has heart him in anyway he got a little destressed when I was crying and carring on but other than that he was fine but I would take some one with you so that if the labor goes on for to long then there will be someone there to take over that way DH can take care of you and not have to worrie about anything else, plus if something happens and you have to have a C section you wont want to have to worrie about anything else so find a close friend or rally to help out.