Hi Kate congratulations on your pregnancy!
My job involves meeting dozens of pregnant women a week. Many have very high BMI. What strikes me most about your post is the fact that you are aware that your current weight is not a healthy weight to be especially when pregnant. That is a HUGE deal imo! I have met so many women who refuse to accept their weight is a problem. You are not one of those women - you have the wellbeing of both your baby and and yourself at the top of your priorities, you are going to be a great mum!
I agree with other posters that this pregnancy could be the start if a new you. I have met women who are very overweight in their first pregnancy and they come back a couple of years later in their second pregnancy looking a lot slimmer and healthier.
Another poster very rightly pointed out that you are likely to see comments such as "high BMI", "BMI++" in your notes, particularly on scan reports. This is necessary to record in your notes as unfortunately, image quality during a scan is greatly reduced in women with high BMI. It is a good idea to be prepared to see such comments in your notes as pregnancy hormones can make you easily upset!
Your biggest risk is gestational diabetes. You will be put under consultant led care and given lots of advice about diet. In most cases, GM can be avoided by being careful with what you eat. You sound like you have your head screwed on so I'm sure you have no problems!
weebigmamma it is not scaremongering. Women with high BMI are put under consultant led care and given extra scans/monitoring for a reason. Yes women of any size can encounter complications, and indeed there are problems associated with low BMI too, but the simple fact is that statistically, larger women are more likely to experience problems. It is because we keep a close eye on things for these woman that the vast majority have healthy, safe deliveries.
Good luck with the pregnancy Kate, really hope the nausea passes soon! I was flat out on the sofa for weeks, it is truly awful! Eat little and often and keep hydrated was the only thing I found helped in any way. Let us know how tour first appointment goes 