IUD but baby fever is making me crazy

So I'm married and I have twin boys and my husband has a son. We are so happy but I can't help but want a girl... Honestly I want twin girls, my husband wants whatever I want but I currently have a iud in. He wants to wait to have a child until he gets a promotion at work and I just don't have patience. That can take up to a year or more 😩 the twins are 2 and our singleton is turning 4. I say get it out the way now so they can all grow up together and get out of the house together lol what's you guys input or thoughts? I'm going crazy over here, staring at people's babies and wishing I was pregnant 😔