On a weight loss journey but I want a baby

I’m on a weight loss journey but I want a baby so so badly. I have almost everything I would need minus a car seat and a bassinet. But I hate that I feel like I can’t get pregnant until I’m thinner and I feel like other people think like that too but then I have patients ask me all day if I have kids and it really kind of hurts to say no all the time. How do you push past the negative thoughts and fear and just go for it? Also I work in the medical field so I have this nagging fear that I would never be able to find scrubs that would fit me if a got pregnant.