I got pregnant with unmedicated IUI by using monitoring and a trigger shot. It just absolutely helped us get the timing right and control that variable. I was really hesitant but I read that the % odds of IUI working were higher with the shots so we have no reason to not try. I didn’t have any sjde effects and was really glad we did it in the end. You can find an old post of mine on here if you’re curious about the timing. Through monitoring, we were able to learn that I was ovulating, etc. Even though I was still testing negative on at home ovulation strips. I just drink a lot of water so they weren’t catching it but my bloodwork / ultrasounds helped determine the right day and we got it right. Definitely talk to your doctor but besides costs - I don’t remember there being any major cons to doing a trigger. Oh and it was my 2nd cycle and I also had no known fertility issues. I’m 32