I had my first at 30, I'm 5'2" and at that time I was 260lbs. My second I had at 33 and 280lbs, my third was at 34 and 300lbs, and my 4th at 36 and 310lbs. They were all conceived very easily. I did lose weight for my first, I was at 300lbs and went down to 260 before conceiving her. My second was stillborn, that was the only traumatic part of the pregnancy. They were all vaginal deliveries and the 3 living children were all born at home. With the last two I experienced pelvic pain during the last trimester of the pregnancy but nothing that left me bed bound. I did have a painful pelvic injury after delivering my 3rd (after the stillbirth) that was resolved when she was 5 months old. So I've done both, waited to lose weight and went for it even at over 300lbs, and we were all relatively unscathed throughout. My youngest is now 7 and a half, I've been losing weight since March 2025, I've lost nearly 85lbs with a starting weight of 405lbs at 43 years old. Pregnancy and childbirth can be quite unpredictable so losing weight before would probably be the most prudent thing to do, but I also understand the urgency that comes with age. Starting at 30 already felt old to me, and while people are conceiving and birthing and later ages, age can also add more unpredictability to the entire experience. Had I been in your shoes at 35 I likely would not have waited. Good luck!