@BabyOB and @nvandmv, I would seriously consider letting them know in a nice (but not uncertain) way that because it is your first baby, you are not sure how you are going to feel (or what sort of birth you will have) that you'd prefer to contact people once you are ready to see people. I usually do an email/text/fb announcement with a "please no visitors until x" on it. Failing that tell the midwives that you are uncomfortable with visitors and to please not allow anyone in (that way you arent the 'bad guy'). Also it can be really daunting with in laws or others hanging around while you are trying to establish breastfeeding (if thats what you want to do) and it is important for you to be able to relax so your let down reflex can work well - hard to do 1st time with advice from well meaning (but not prefessionals in the field)... I have some other tried and true methods of keeping people away... The last thing I wanted was people around while I was having my blood loss checked, stiches/staples reviewed, suppository painkillers administered, looking and feeling like shiz and trying to establish bf.... I think if you explain some of these things to your partners they can encourage a visit a bit later or ensure any visit is SHORT.
I also made it difficult for people by letting them know that if you hadnt been vaccinated against WC in the last 3 years, dont bother coming bc you will be turned away.
Hope you can enjoy this very special time (between you, your partner and new baby) without unnecessary interference...
Ps: other kids (and their diseases/colds/viruses) are probably one of the biggest risks to a newborn - i would be putting my foot down and making DH tell them so - its your baby and your responsibility to protect him/her - stuff what anyone else thinks, could you imagine if your bub died of a cold sore one of your rellies bought in - devo, esp after all the trouble (IVF etc) to get them here!)