I posted something quite like this just a few days ago. Dont feel alone i know exactly how you feel.
It is very hard, to find the right way to feel after a termination. And you wanting to have babies is only natural.
Do not feel guilty for your decision at 18 you do not know what the future holds, its very young.
Have you recieved any counselling?
Do you think that your boyfriend still does not want children?
You are still young darl, but i understand the heart wants what it wants and its hard to convince it otherwise.
Im sorry you were pressured, my partner pressured me into a termination too, and sometimes i hate him and other times i accept that he was being practical. But i will never know who was right.
Im here for you, anything you need to say.