Considered overweight but want second baby

Me and my husband want to have a second child. Our first is currently 18 months old and I’ve always wanted siblings to be within a three year max age gap. I haven’t lost all my baby weight from my first pregnancy yet so I’m considered overweight on the BMI. We really want a second child soon and I’m supposed to lose 40 lbs first. I’m just curious about how many women have had healthy pregnancies while “overweight”. I’ve been working out rigorously for 3 months and have lost 25 lbs. I think if I continue to work out while pregnant I’ll be fine. Thoughts?