welcome to HealthcareMagic
The main criteria to get pregnancy
-normal and regular menstrual cycles
-proper formation and rupture of ovum
-proper and patent fallopian tubes
-normal semen analysis
of the male partner
If these conditions are fulfilled then you can get pregnant.The problem in failure of IUI has to be identified and it needs to be seen that the fallopian tubes are patent or blocked before going ahead with the further treatment.So you can go ahead with Laparoscopy
.For improvement of motility of sperms your husband can start antioxidant tablets
containing lycopene;Co-enzyme Q10 and the semen report should improve in 2-3 months.Please get the scopy done and try again.
All the best.