Clear blue Digital OPK

This is our third month ttc, I decided to try clear blue. I had a regular period for months, then it was a few days off. I started when clear blue suggested and got 2 empty circles and I have gotten flashy smiley faces since then, about 8 days now. I'm getting very discouraged. I know clear blue said to stop testing after 9 flashy smiley faces and that's tomorrow. I just don't know what's wrong. I'm healthy, don't drink, smoke, do drugs, and I've been to the doctor. Any advice?