Where did this baby fever come from?

I’ve always wanted to be a mommy. I just haven’t had the strong “ ready to start trying right now” feeling. Until now, it’s hitting me hard. I go on YouTube just to watch vloggers and their pregnancy journeys. I enjoy reading everyone’s post about getting their BFP I get so excited for them. I learned all the mommy board lingo. I have this on going daydream of me being pregnant and getting my baby bump. Whenever someone I know is pregnant I find myself researching the size and progress of the baby at the weeks the mom is pregnant. I always knew I wanted children but I honestly could never picture it let alone picture myself saying the words “I want a baby now. I want to meet the son my bf and I have been imagining and talking about for the last 6 years as if he is already apart of our lives.” The only hiccup is I promised myself I’d lose 40 pounds before I got pregnant. My bf also wants to lose a significant amount of weight. I don’t want to be even more overweight. My BMI is over 30. My knees are giving out and I’m a on and off again pre diabetic. So my health is number one but I can’t fight this baby fever. It’s getting stronger by the second and finding out I have PCOS makes me want to start trying right away 😪😪😪