I have to agree 100% with @Apileofballyhoo, thank goodness you have other more supportive posters on here now.
You read threads on here about women who are coerced into sex as they feel they have no option, how many women are told that coerced sex is rape! Im not comparing it to rape, merely illustrating how seriously it is taken when a woman’s choices are ignored and she is coerced into sex (a physical act) she doesn’t want. There is a parallel here because this is a physical act/ procedure on your body, that you don’t want! From your recent posts it sounds very much like you already love the little life inside you and you are being coerced into a procedure (physical act) that would violate your body and take the little life from your womb, I would be very surprised if the hospital will want to go ahead with an abortion that you are clearly being coerced into.
An abortion that you choose, that you willingly decide to have can be traumatising enough, but a coerced abortion will have an even more traumatic and lifelong impact. That’s why it’s so important that you get to make the right choice for you! No matter what that choice is!
In your shoes, I would tell your dh and your parents that the pressure they are putting you under is wrong, that this is your body and you won’t be forced into a procedure that you don’t want to have! Tell them you are keeping this baby and they can choose to abandon you if they want, but you will not be bullied into an abortion that you will forever regret! They are betting on you letting them walk over you. Once they realise that you won’t be bullied they have two choices, shut up and support you, or leave you to support your children alone. Which by the way (once benefits are claimed) you will be more than financially capable of!
My bet is that your parents will back off and continue to support you. If your dh leaves, then that is his prerogative but he made this baby with you, he failed to take the responsible route and have a vasectomy/ use a condom so he cannot blame you here!
Can I ask, did your dh consult you when he arranged to buy this expensive car on finance? Did your dp give him the deposit believing it was for your use, or believing it was for your DH’s use? It seems madness that he is paying £300 a month for a fancy car that he literally only drives to his parents house, where he then leaves it as he then catches a train. Do you think your in-laws are using the car whilst he is at work? Surely he could use the old banger? Or is he too embarrassed to be seen in the car that you drive?
It seems madness that he bought that car when your dp are having to then spend the same on feeding you and your dc! I would look into what can be done with the car, I don’t know much about balloon payments but I would look on the finance threads on here and on the moneysavingexpert forum for advice.