Chances of conception in one cycle of IUI with multifollicular ovulation after 5 years of infertility
are around 20%.
Your semen analysis
Fasting has no effect on success or failure of IUI.
You can safely try around 4 cycles of superovulation
with IUI for maximizing chance of pregnancy
. After 4 cycles, if you don't conceive, chance of success in IUI decreases & better to go for IVF.
As there are good chances of conception in this cycle don't think of future & relax. That might help.
Wish you good health.