You're extremely vulnerable op, very foolish to have put yourself in this position.
As pps have said you need to ASAP get yourself on a better footing financially.
If the relationship were to end while you are still not working and unmarried you and the dc are basically screwed
And the relationship ending needn't be separation it could be if he dies - whether or not he has a will but frankly a father with dc as vulnerable as his are who doesn't have a will is an irresponsible dick!
I have a relative who was in your position and the partner died intestate, she and the dc were turfed out the family home by the "in laws" but quick and while they were all very much still grieving she had to go back to work full time, move the kids to new schools etc
If he becomes incapacitated you could well be screwed too.
If you split he can legally and summarily make you homeless and destitute basically overnight
Get a job ASAP - childcare costs need to be covered by both of you - start saving up if you can, in a separate savings account to him, start a pension, get yourself organised ASAP
He is stringing you along and has been this whole time.
I refused to have dc without being married, not for moral or religious reasons but practical and financial ones.
It's really the only sensible way to approach having a family in the Uk as there is very little protection for women and children in the event of a relationship ending however that happens