Help! I'm so lost right now

Does anyone have that undeniable urge to get pregnant. I dont know what's wrong with me but I feel it's all day, everyday. I cant help but want to be pregnant. I've lost a baby before early on so maybe that's why I feel this way? Like my body needs to replace the empty space? Like I know for a fact I cant afford a baby. But I want one so bad 😭 I feel like I have an empty space in my chest and it needs to be filled. And my boyfriend knows we cant have one either. Hes not ready for one yet either, but God I know he would be a great dad. I would love to see him hold our child at night rocking it to sleep because he/she has been fussy.😭 I even got a kitten as recommended by a few websites to get a young pet to try and fill the void but it's not working. I quite frankly find her annoying most of the time, but I know that's just me. I love my other cat, I love her too, but I cant seem to bond with her. Please help! Do i just say screw it and have a baby, or are their other ways to fill this empty feeling?