OP when you say you are mid 20's are you under 25? this alone is a reason you would not get social housing property. (not taking into you pregnancy into consideration)
have you provided documentation that your are pregnant or did you just fill out the form stating you were pregnant but with no confirmation of pregnancy (MATB!) ?
Also I am afraid to say, lots of people are pregnant/or have children, who are in more dire need of housing than yourself, who are currently in temporary accommodation, and have been for years on the hosuing waiting list!
if you get offered a house, take it, you can be picky about the area you live in, however expect to be guaranteed to be on the waiting list for longer/years.
Hosing associations/councils just don't have the property, and with all the latest news that most HA/councils are needing to make redundancies/cuts... (one local to me today, has told there workforce that 350 people will be made redundant in April 2015) as the government have told them they need to make HA/council cuts by !% each year, for 4 years, which is for most associations/councils is millions of pounds each year.
You will find also, and I also agree with this, that HA will be very picky in offering those who need HB with a proven track record of poor credit control/history, with the universal credit coming in, its already a huge migraine for most HA/council.... because no money coming in, means they cant pay their staff.
I've personally seen the state of one companies books... some are now going straight to the high courts, for evictions!
people pay as little as £8 per week, but yet are thousands in debt in rent and also HB recovery, which the tenant owes the company, not HB!
I've dealt with this week 9 high court evictions this week... all with young families...
logically you cannot just think that you will get social housing property, you cannot thinks that's your only option, because frankly you will be waiting along time, you need to be proactive in trying to source other property via other means... I'm not sure of you applied for council or housing association.. there is quite a few types of housing tenure that you need to be looking at.