On my way to an IUI

My dh and I have been ttc for 12 months. We went to a reproductive endrocrinologist and have ran some test. To my dissapointment they all came back a-ok. U/S good, SA good, and blood work good. So they ordered a HSG. Radiologist said he found a mass and i had paritubal adhesions on my Rt side. I am a rad tech so I had my rad take a look and he said it was all normal. That was another frustration. At least that would explain why still no BFP. So we did another u/s and suprise...perfectly normal...that mass he found..ya it is called my ovary. I ovulate normally, but dr put me on clomid anyhow. She said about 10-15% of infertility reasons are unknown. Yah for me. My endo was a tiny bit small so I have been doing estrodiol pills vaginally. So tomorrow is the big day for our IUI. I had to do my Hcg shot this am at 1:15. That was weird. I'm excited and nervous at the same time about tomorrow.