Cramps after meds?

Kay

For this cycle, I took Femara + Menopur + trigger shot. Trigger shot late Thursday evening. IUI today. I’m having some pretty terrible cramps and mild lower backache. Cramps feel like those on a heavy period day. Has anyone had cramps after all these meds and IUI? I’m uncertain if it’s caused by all of the meds or if my giant follicles are releasing eggs. 😥