Hello
I'm using decent sperm, yes.
I do use ovulation tests.
I was doing it three times a cycle, once 10 or 12 hours after positive LH test, 2nd time 24 hours after, third time about 36 hours after. I suppose if I ovulated later than that it might miss it but I checked for egg white CM and inseminated the afternoon I got that. I'm also using stuff that makes it easier for the sperm to swim. I use the unwashed variety which live longer than IUI sperm (about 12-24 hours) so I don't know what I'm doing wrong. I'm considering inseminating maybe at 45 hours next time.
Haven't had an MOT yet but I'm having one in January before I try again in case there's something wrong so I don't waste more money. I have had terrible PMS and irregular cycle lengths for the last year and a half and am thinking maybe I have a hormone imbalance.