Im on clomid and need some help?

i had my last period on may 3rd my dr put me on clomid and said to take it 5-9 so i started on sat. may7th to day is only my 3rd day on it my dr. told me to use opk on cycal day 9 so i took 3 of them one was clear blue digdal on with the happy face then an enternet cheepie and anwser wicht clear bule and awser was+ were the enternet one was -. so 2 out of 3 was + but can you ovulatin this early??i thought my pcos was the reson for the + but my dr. said thats not it and told me to bd ever othere day....what do you guys think?? im a health 23 year old with pcos...only proublem i have is i dont ovulatin...thanks everone! and god bless