I am 17 weeks pregnant, from Donor egg. We did 3 own egg cycles, but very low AMH meant I got very few eggs (3,1,1), and never got pregnant. In the end we went to Serum in Athens who are fantastic. Our donor had 9 eggs collected, 6 fertilised, and 4 went to blast. We had 2 blasts put back, one took, and hopefully in 23 weeks or less, it will be our first baby
. 2 more frosties in the freezer that I hope one day can become one or two siblings. They don't overstimulate the donors, which was important to me, and I believe it shows in egg quality.
It's early days of course, but I very rarely think about the donor part, I just worry that everything is going well and can't wait to meet our child. I've done my grieving for my genetic link. Now I couldn't care less.
The phrase you are looking for re the pregnancy/DNA is epigenetics. It's a new and little understood science as yet, but the theory is that the mother (ie you!) dictates which markers are turned on or off. Sorry I realise that's not scientific at all, just my layman's understanding.
FWIW our full round was €5,000 but we had to pay another €1k for the embryos that we froze - think it's €200/year after that.