Testing out trigger?

Aly

I’ve read this a few times but could someone explain this to me? Are ladies taking a trigger shot prior to transfer? Or is this the retrieval trigger shot being referred too? I had my transfer on Friday (Nov 6), and go for my blood test on the 17th. I will likely get a call with results while I’m at work, so wanted to test a day or two before so I can prepare myself. But, wanted to figure this “testing out the trigger” out.

Thanks! Good luck to all on this journey!