Trying for another baby

My husband and I had 4 miscarriages over 3 years before we finally were blessed with our little girl in March 2019. We love having this child so much and are now so excited to have more children! The doctor told us to wait until she’s 9 months to start trying again. My question is did anyone else have a similar story and then have no trouble conceiving a healthy baby after giving birth to your first? I’m just worried it’s going to take another 3 years. I almost want to start trying now! I know that’s crazy but I’m sure some couples will understand that nothing is a guarantee when it comes to getting pregnant then staying pregnant 🤷🏻‍♀️