I wish you lots of luck. I test same day.
It is common to have cramps after ET. I have had three and after each experienced cramps. Regarding a positive result, I am waiting on my positive results now, actually I test on the 14th. I have had cramps, cramps and more cramps since the retrieval. I hope it is my ovaries returning to normal size but I also read somewhere that if pregnant they don't subsize right away. Not sure of the validity of that statement.
Keep us informed of your progress. I hope all goes well with you.
I have had cramps with all my IVF transfers (4). The last one was a chemical and my only positive. But I don't think cramps are an indication of success or not. Many women have AF like cramps and are pregnant. If you had a retrieval it could also be your ovaries returning to normal size.