Being a single parent-HELP!

My boyfriend of 7 years always talked about us having a baby and I am finally pregnant he wasnt happy at first because of our financia situation but he came around but now hes changed his mind again because he found out I am having twins and he does not want 2 kids at the same time he says hes thinking of me by saying I cant handle it but I know I can and I really want to them. Hes forcing me to abort them I dont know what to do??? Can I do it alone? I am torn I love him but this is unfair he has 4 kids already abd he is taking away my chance to finally be a mom and have our own family