February FET

We started the IVF process in January 2022 after 3.5 years of infertility. We did our first transfer in April 2022 which was unsuccessful and a second transfer in August 2022 which gave us our beautiful miracle baby boy who is now almost 21 months old. We have done all of the testing again and are now due to start medication in preparation for our February 2025 transfer in the next week or 2, whenever my cycle starts. We are doing things mostly the same except this time my doctor wants me to do an HCG trigger shot the night before I start PIO and then start loser dose HCG after my transfer. Has anybody experienced this?? It makes me anxious because we found out the evening of 4dp6dt and with HCG shots we won’t be able to test early 😵‍💫 do we know what the point of the shots would be? I didn’t have any kind of HCG shot with either of my other transfers