Hi Elly
you will have no problem rejoining, i know lots of people who have rejoined after having children.
Not sure about the accomodation issue though. Whether because you had worked for them previously you would be able to take the living out allowance, certainly you wouldnt be able to live in EK accomo with a child as its issued on a single basis only.
Might be worth looking into sponsorship also. As a female you are not able to sponsor your child for residency so your husband would have to find a job in dubai and put you both on his visa, unless you come on your own, in which case you would be given a single persons visa as you had last time.