Hey OP, I started IVF at 38 with an AMH of 11.8 (I think, can't quite remember!) and a follice count of 11/12. We knew we wanted to do PGTA testing on embryos, as we had had a TFMR for a chromosomal problem, and to reduce the time to transfer a viable embryo, so did 2 rounds of egg collection, so the injections, scans, retrieval, embryo creation, then biopsying the embryos for testing and freezing them.
We were in a private London clinic, I had 4 or so scans for each egg collection round, and then needed a day off for the retrieval which was done under heavy sedation. So it did take a lot of time, each time I was in for a scan/nurse consult/trip to the pharmacy it was a couple of hours. Luckily my work was very supportive and I was open with them I was doing IVF.
Physically, I found it OK, better than expected, but emotionally hard, especially when initially it seemed we might not get that many eggs, I found the waiting and wondering harder than the injections or medication affects.
With the pgta testing, my consultant was pretty optimistic for our chances - a pgta tested embryo has (for me with my medical background anyway, it may vary) a 65% chance of implanting and of it does, the risk of miscarriage is much lower than an untested embryo. For me it was worth the peace of mind.
What I would say is before IVF, or before a transfer anyway, if you haven't already then do get your thyroid tested, and blood clotting, and maybe look at a uterine environment (a saline scan and a microbiome test) to see if there's anything off there that might be having an impact now, and would also be good to resolve before getting to a stage of transferring embryos