That’s so disappointing and I would absolutely raise it.
I had mine at 31 weeks. They definitely wanted to give it sooner rather than later, but they didn’t seem concerned it was given a few weeks after 28 weeks.
My OB was very specific about me getting it at 28 weeks. I’d definitely ask about the timing and see if there is any concern so you can be prepared if you have another pregnancy.
My biggest concern is of I hadn’t brought it to their attention, would I have gon longer without getting it or not gotten it at all .
i definitely would be concerned because my OB made it very clear that I needed to get my Rhogam shot at 28 weeks! Hopefully it really isn’t that big of a deal but from my experience my OB made sure that I had mine at 28 weeks❤️