When are you starting up again lil. Sorry, I know you've said this before but I've lost track. Feels like you've been waiting for ages. I certainly hope your eggs know the drill this time too. Personally, I swear by quality over quantity. I couldn't increase the number of embryos I produced, but I swear by the high protein low carb diet. Last cycle with only 3 mature eggs, 2 fertilised and both were top quality at day 3 transfer and a brief pregnancy. This time again, 3 mature eggs, 2 fertilise, both top quality at day 3 transfer. Natural pea protein powder for breakfast, almond milk, super greens and cacao for extra vitamins, tin of fish and salad for lunch, veg and fish for dinner, with nutritious snacks like walnuts, almonds or I'd make a batch of mini quiches with tuna and veg so I could have them handy to heat and eat. It's tough when you're stressed about the unknown of IVF and just want comfort food! But studies say it gets 50% of embryos to blast and since you only had 2 alive at day 2, I'm really thinking it will up your chances.
Mif, I used to take those supplements you mention (along with many more!) up until EC. After that, I changed to folic acid, vitamin D, iron with vitamin C to increase absorption and of course the estrogen and progesterone. As for the hCG blood test, my clinic requires it even if I get my period or get a -ive POAS as they need to have an official blood test result for their records after having put an embryo in. I suppose if it was ectopic and we had our tubes burst or something like that and they hadn't checked, they would be legally responsible so they need to cover themselves legally.