Ovulation while taking Clomid?

Has anyone ovulated while still taking the actual pill? I had my first round Sept 17-22 without af, and was supposed to ovulate 9/30-10/1 but I never got a positive opk.

On friday I got multiple very strong positives on FRER and Clearblue digitals that read "pregnant". When I put it in, glow said I would only be about 3 weeks, or 1 week from conception.

Is it possible I ovulated while still taking the Clomid and got pregnant then? I feel like my positives are too strong to only be 3 weeks and 3 days along.