I had iui on jan 18 then i had a chemical pregnancy i need advice whether to repeat iui or move to ivf no reasons for infertility been married for 3yr?

See below: If you got pregnant with an IUI it would seem reasonable that you could again. It depends on how many cycles you have done and what the primary causes of your infertility are. If was your first couple tries it makes sense to go the most conservative route and not spend the money on ivf.

Difficult choice: 6 cycles of IUI on injectable medications costs around the same as one cycle of ivf. One takes 6+ months and ivf takes 6 weeks. Here is the "rub". 6 cycles of IUI is not as successful as 1 cycle of ivf. So it is a choice. By doing iui, you "gamble" that it works in 2-3 attempts and save money; but if not, than ultimately it costs more because when IUI does not work, you have to go to ivf.