clomid 50mg && iui

Day day
Okay so me and my partner been trying to concieve for 3+ years naturally no success was told to get an HSG done and was told my tubes were blocked. That broke my heart. Then didn't try for a whole year gave up. Then went to see a fertility specialist and did a second HSG and was told my tubes were not blocked and SO's sperm analysis was normal and currently on 4th day of Clomid 50mg and have kind of headaches and cramping and soreness of breast. Hopefully its working scheduled to have a ultrasound and blood test on the 28th of feb. hoping I have some mature follicles and it will work on first try.. how many women have gotten a success on first try? What do you recommend if it works the first time and what I should do to keep myself busy for the 2 week wait??