Lupron trigger?

Abbi • TTC #2 with PCOS via IVF after MMC

I’m triggering tonight, and my doctor just last-minute switched my trigger from Pregnyl (HCG) to Lupron. Anyone know if this is normal? Should I be concerned? The clinic told me I’d have to do the progesterone in oil shots now too. I was so looking forward to be done with shots. 😩😩