I don't know if it'll be different because you had IVF but here's what ive had so far...(this might be a bit long, sorry, want to give detail!)
I called for a doc appointment when I first found out I was pregnant, couldn't get seen for 2 weeks and I tend to be a worrier so I was like "well I'm pregnant and I just wanted to see somebody" so they told me all the doc would do is say make a midwife appointment so I made one of those instead and still had a 3 week wait!!
Anyway the midwife appointment was the "pre-booking" and the woman I got was a bit useless to be honest. She went over a lot of medical history questions and then gave me some books etc. She was supposed to take some bloods, urine, height, weight and blood pressure too but she didn't. When I had 12 week scan I had the "booking" appointment also. They were a bit unhappy that I'd had no bloods ran yet so they did all of that...took my weight, blood pressure, blood samples, and went over more family medical history. Also gave me some random free vitamins so saves me money buying them I guess!!
I've just moved house and registered with a new doctor and I was told I had to make a GP appointment to get midwife appointments this time. So along I went, the GP seemed confused as to why I was bothering her but she took my blood pressure and just said to make a midwifes appointment on my way out of the surgery which I did.
Went to see the midwife, 15+6 and they just talked about how they're transferring my care over, they took my blood pressure and let me hear the baby's heart beat which was great!
Got to do the pre-booking again on 27th and booking again on 2nd July though so they can do their own assessments. Also having all bloods repeated
. Don't move house!!
As far as where to give birth, I thought I had to make that decision also and I looked into it a bit but I was told by first midwife at 8 weeks not to worry just yet, at 12 weeks it wasn't mentioned past me saying I don't know except for not a home birth. And at 15+6 I was told what my options are, I think they hoped for a decision but I said "I'm really not sure, but I've 5 months yet, plenty of time to decide right?" And they said that's right and to just let them know when I decide and see the midwife. I want a water birth so I have to decide fairly soon I think for availability but if you just want a simple natural birth I don't see why you'd have to rush into a decision
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Good luck, and congratulations 
x