Symptoms after transfer

Hi ladies 👋🏼 I'm new to this and I need feed back please.

I had my retrieval and 7 eggs were collected which only 2 were mature, and only 1 made it for transfer. I was told it was a 8 cell embryo is this a good sign?

I was very sad that only 1 made it but when I was told 8 cell I thought I have hope.

I am now 3dpt I'm praying to god this embryo makes it, I have been having mild cramping after day 1 of transfer.

Could some please share some light and let me know if they have experience cramps after transfer and if so for how long? Also is 8 cell embryo what they call grade A embryo I just need to know if I have a chance of getting pregnant. I'm pregnancy test is scheduled for next week.

Thank you 😌