Op- Playing devils advocate here but what if you accidentally became pregnant? You would find a way- of course you would.
We cut our cloth accordingly and all that crap...
Thing is, you have made the decision to buy a house, fair enough, you dont want to live in a council house ( can I ask why? ) and with your decisions there are consequences, mortgage etc.
You are possibly used to a certain standard of living, we all are to some degree, again, you could get rid of a few luxuries, go down a brand at the supermarket etc.
I get what you are saying about the people you work with but honestly, would you want to swop lives with any of them?
You're there to "empower" these families as you say and yet you envy them in a way. Skewed view regardless of how much you like your job.
We had an 8 year gap and it's worked out well for us, you make it work.
If people actually sat down and thought about whether they could really "afford" a baby then hardly anyone would be pregnant.
Circumstances change all the time for people, good and bad. Those who already have children can't just send them back when times are hard, I've been through horrible times as a parent and we have survived.
That's another reason I choose to live in a HA property, I have a lovely home and it costs me £400 pm.
I hope you figure out a way but strongly suggest you don't feel bitter towards some of the families you work with, not until you've walked a mile in their shoes.