We got 11 first time and 5 fertilised. We had a day 3 as only had 2 developing well. We did get pregnant but miscarried at 12 weeks sadly.
In regards to what to do after, I had acupuncture and followed the ideas of Chinese medicine, warm foods and drinks, keep feet warm and stomach. Not too much milk as makes womb 'damp'.I wouldn't have had drinks at room temp, still had drinks from fridge but wouldn't of had a milkshake or iced drink etc. Showers rather than hot baths too.
They are being presumtuiois to say icsi next time, you may not need a next time. I was told I had a less than 20% chance of even getting to the fertilisation stage and got pregnant both times, some people get 20 fertilised eggs and don't get pregnant from it, you just don't know, they base it on stats but that's all it is, statistics.
Wishing you the best of luck and congrats Mrs law

xx