Well first of all CONGRATULATIONS on your pregnancy. You're going to be somebody's mum! How wonderful :) Your body can make a whole person - that's fantastic, what a good job your body is doing sustaining this pregnancy :)
There are a couple of things to bear in mind that leap out at me from your post and other peoples too. Firstly - you have a high BMI. So do I, so do lots of mums. High BMI does not remove our capacity to think and reason nor does it mean we will necessarily have an unhealthy pregnancy and complicated birth. The additional interventions that usually feature in managing a woman with high BMI should all be evidenced based (and you can ask them to give you that evidence) and they are all options for your care. NOBODY CAN FORCE YOU TO ACCEPT ANY INTERVENTION OR TREATMENT. That would be assault. It's up to you what you accept and what, if anything, you decline.
The referral to the anethesthetist (how the hell do you spell that!) is about meeting them to talk about potential issues in delivery. Anything they suggest, anything the consultant suggests is optional. You don't have to have it. Ask them to give you the evidence that shows what they are suggesting will give you a better chance of a good outcome, then ask them to show you by how much that intervention improves the chance of a good outcome over not having it. You might decide it's an intervention you want, you might decide youre happy to decline it. Either way it will be your decision. Inform yourself, be proactive and assertive. This is your pregnancy not theirs.
If the way they are approaching you makes you feel down about your pregnancy then say so to them. You are Sjd114 who is pregnant and has a high BMI. You are NOT the High BMI pregnancy. You're you and they need to talk to you with respect and engagement as they provide care for you and your baby.
I recommend this book It's not some sort of woo pregnancy 'enjoy the pain' manual. It's about reminding you that you the woman are doing a marvellous thing that you're designed to do and you are the centre of this process, not anybody else and especially not any hospital procedure or regulation.
The other thing I would recommend is staying active. Keeping active will help keep your BP down and your blood sugar within norms. If you can swim, keep swimming. If you like to walk, keep walking. If you cycle, keep cycling - I managed up to 39 weeks (slowly)
. And tell every health care professional you meet that you want to be active and move around in labour. It's their job to provide you with safe ways to do that. If I've learnt anything from having three dcs its this - upright and moving in labour is a Good Thing, being immobile is not.
Keep posting for support too. There are so many people on this site who will have been through what you've had today. It's our job to carry you along a bit. Lean on us :)