Follicle 22mm without leterzole trigger shot?

Glo

Hello all. I went in to my clinic to possibly start povera to bring down my period and start leterzole. For the last 2 months we halted our treatments to get rid of chronic endometris (the lining infection not the other one). It took two doses of antibiotics to clear. My visit today was for me to start on a new cycle for IUI. After doing my transvaginal ultrasound and blood work they message me saying my bloodwork and ultrasound is indicating I’m going to ovulate soon (wow on my own , I thought without leterzole) and i have a follicle that is 22mm ( didn’t ask about other ones). They want me to trigger tonight btw 9-10pm and IUI in the morning. My question is isn’t the Iui too soon? i normal go In the day after trigger for Iui. I also was give progesterone suppositories this time because my last 3 Iui ended in chemicals.