Boyfriend doesn’t want kids yet so why does he want me off birth controll?

My boyfriend keeps asking me when I’m getting off my IUD. He has mentioned it a lot of times, for example today I told him it’s been almost a year since I’ve had it and he said “I thought you were getting it removed.” I have a deep fear I’m going to get pregnant. He keeps saying I won’t get pregnant but I get so scared since accidents can happen. And if he doesn’t want kids yet why does he keep pressuring me?