Heartbroken and just need to vent

I am 38 and have diminished ovarian reserve. We skipped over IUI based on Dr recommendations and moved straight to IVF. This is our first cycle. After 9 days of stimulation, we only have one measurable follicle at about 13-14 and about 5 smaller follicles that are all less than 10. The Dr said moving towards egg retrieval is not looking favorable and wants me to convert to IUI. Based on our previous conversation, our chance of a successful pregnancy with IUI was less than 5%. I’m just so sad and trying not to stress. If it doesn’t work, the doctor said he’s not sure yet what he would change.