Horrible throbbing back and hip pain day after iron infusion?

I had my first iron infusion yesterday, 300mg Venofer. I felt great right afterwards then as the day went on I felt a bit tired.

This morning I woke up with horrible lower back pain and hip joint pain. It is worse and it throbs when I move around too much. I get up and walk around alright but then as soon as I sit/lay down to rest, it hurts and throbs so so much. I kind of feel it along my whole back. My thigh bones hurt alot too.

Is this kind of pain normal after an iron infusion? My hemoglobin was 69, ferritin 11. I was like that for a long time...

I read bone pain is normal, but this throbbing kind of pain? My BP is fine and I feel otherwise fine, no stomach issues or headache. I'm just crying because this pain is scaring me alot.