I like your mum's optimism, confused, and her own positive experiences, but I'm afraid like you the majority of my real life examples are pretty bad. I don't know anyone who had a fast first birth, and the majority of my friends had interventions and many of them (quite a surprising number) emergency caesareans. Many of those who didn't end up with a caesarean had tears or were cut. My mum was cut and had forceps to deliver me (I'm the eldest), and the same happened to my sister, so that's what I'm expecting, tbh, or something similar if I ever get there. I can think of 6 people straight off who had 36 hour+ labours - that seems to be almost the norm for the first baby as it takes so long to go into 'real' labour. The first 12 hours or so I guess weren't that bad but the whole process often involved missing out on a night or two of sleep so it was the exhaustion by the end as much as the pain that made it tricky.
OK, this is probably the gloomiest end of the spectrum but I've just been amazed by how many of my friends had what seemed to me like a horrible time (as I've said on here before). And it wasn't even deemed a particularly bad outcome (and certainly neither they nor their babies were in any danger at any stage, I should point out, so the ultimate outcome was obviously ok).
I think genes probably play quite a big part in it - if your mum had a fairly easy time, confused, then you might well too (if/when you get there?!). One of my very few friends who had a reasonably good first experience said her mum had good and fairly easy births every time (and she had six kids!).
Anyway, I've probably got an overly pessimistic view of things so v. glad of any stories to the contrary (and am not meaning to be scary/unhelpful for our mums-to-be - 'my friends' is hardly a statistically significant category, and obviously I am remembering the bad ones, and forgetting the good ones, if I even heard about the good ones). I am just of a personality type that likes to be prepared and fear (and know) the worst so that whatever happens, more or less, I'll be at least a bit prepared.
Don't know why I'm talking as though this might be a reality - I'm so far from this point! Haven't even started my injections yet (STILL)...
Anyway, will write properly soon, but best of luck with the appt, HP and getting to the bottom of things (so to speak...) and hope things are ok, Seagreen - nice to have you back with us. And hope the BFPs are feeling good, and dealing with tiredness, and enjoying their cravings as far as possible!