Hi Sleeps,
I've had fresh ivf x 2, and one frozen round. First ivf didn't work - I've heard they often treat it as a tester round (especially on the NHS) - I didn't think I was given enough of the drugs, but from their pov they were being cautious. Anyway I got seven eggs, maybe six fertilised but by day 2 none of them were great - they put two back, none were worth freezing, it failed.
Second cycle was much better, they got 12 eggs (so still not loads), maybe 9 fertilised and 8 were good quality. I had two put back, had one baby. Had a frozen cycle from the same batch four years later, two put back, now pregnant with one baby.
Im(totally unqualified)o, the first round was a duff one, and the second one, for whatever reason, obviously got a semi-decent batch. Not perfect as I never conceived twins (probably fortunately), but I consider myself very lucky.
I don't say all this to rub it in your face, but to point out that it's completely possible to fail once and then do well out of it.
Your consultant sounds insensitive at best though - I'd change clinic if I were you and it's a possibility.
Can't remember OHSS symptoms but definitely keep an eye on it.
Best of luck! Fertilityfriends is a good forum if you need further support.