Should I switch up clomid days ? To see if I works better

[Dodds87]

I take clomi days 3-7
First month I ovulated day 18
Month 2 ovulated day 32
Month 3 ovulatedd day 17.

None of these months have got me pregnant and I feel I'm still ovulating late. Should I try switching up the days ?

I take it days 3 to 7