Hi India,
Clomid will give a false positive on an opk if done within 5 days of taking your last dose. Some opk's will show a second line all the time as LH is always detectable in our bodies. So unless the line is the same as or darker than the control line (or close) then we shouldn't take it as a positive. If you are getting 9 days of very dark lines then I would do a hpt. (I hope so much that it is a bfp.)

Not all women will ovulate on cd13-15 on clomid. I ovulate later on clomid than naturally so keep that in mind. What cd are you?