should I start clomid next month?

I got an opk that I believe is positive. However it is not blazingly positive. Just enough positive, if you know what I mean. I'm just concerned because the test line is the same color but not darker at all, and I've seen many ladies with blazing positives. My OB said to try another cycle with just Metformin and Provera, and test with clearblue opks. I don't want to wait another month on clomid if I actually need it. :( Is this positive enough?