Carlotta, I have a high bmi - but feel fit and healthy in myself. I lost 4.5st this year and my resting heartrate dropped dramatically when I took up running. But I'm really aware that a lot of HCPs won't necessarily see past my current size and weight.
If I was already at my target weight, I wouldn't be gaining (pregnancy excepted), so I already have a 'healthy lifestyle' but it's going to take a while to show in my body, there's a time lag when people are as overweight as I am/was. With the best will in the world it wasn't going to disappear as soon as my habits changed.
Last pregnancy, I had also lost a significant bit of weight before conceiving (I put a lot of it back on slowly over the last four years before starting again) though I had done it mainly through eating changes, rather than being active as I have been now. Despite not being fit last time, I had no size related complications of pregnancy and labour was fast and straightforward.
I am meeting my midwife on the 30th December (though she's on call for birth so it may get delayed!) and I wish I had a couple more weeks to go.
She asked me if I was fit and healthy in our brief phonecall, and I mentioned that I had a high bmi, but that I exercise and eat better than I used to, so felt well in myself. She said that above a certain BMI they need to inform me of the increased risks, but that having a home birth would be my decision. One I'll base on how the pregnancy goes in terms of the baby's health mainly. If I can stay relatively active and eat sensibly, I can't see why it would be a problem.
My pattern of weight 'gain' last time around was losing weight until leveling out around 20 weeks (mix of sensible eating and continued morning/all day sickness), then gaining a bit on booking in weight. A couple weeks after he was born I was over a stone below my booking weight.
Sorry if I've rambled. The jist is, I know myself. Based on that knowledge, I'm not concerned about my BMI (just under 40) but I was concerned about how HCPs might judge me based on it, I was quite reassured that my midwife didn't seem phased, but of course she hasn't seen or weighed me yet, so we'll see!