I'm a single parent and I'm expecting dc3 in a few weeks. I've been on my own since about 8 weeks into the pregnancy.
My other children are 5 and 9 and they both have wanted to sleep near me for as long as I can remember - I was still co sleeping with the 5yo anyway so that has pretty much carried on, though he has his own bunk in the other bedroom, and ds1 has the top bunk in there.
Sometimes they both sleep in the other room, but last week I decided that rather than have them ask all the time, and try to share my double bed with both of them - which never works, as ds1 is too big now and there isn't enough room - I'd put an extra single bed in there too, so they can both be a few feet closer than when they're in their own room.
It's a huge room - bit more crowded now, of course, but it's about 20ft long including bay window and maybe 14 wide, though a lot of the way along it's narrower because of built in cupboards, en suite etc.
So we have the double along one wall, then the single right behind it 'head to toe'.
Also there is a cot in there now! Not much room really.
But I wondered if this is Ok of if, God forbid, the HV or midwife saw this arrangement and was shocked - well would they be shocked? Would they think it was overcrowding, and bad for the children?
As I said they have their own room across the hallway, but they just seem to want to be in with me atm. I imagine they might beat a retreat once dc3 arrives due to noise and getting woken up all the time 
Thoughts appreciated x