Confused- early ovulation on clomid???

Christi

CD 11 with first clomid cycle days 3-7 (this time ttc at least). I didn't ovulate last time 3 years ago that we tried it days 5-9 and the first month after we stopped i got pregnant by some miracle. This time around I actually got the high indicator on the fertility monitor yesterday. Today I got peak on the monitor plus blazing positive opks three separate times during the day. I figured I would have the high fertility for a few days before a positive. I've had sharp pains on the right side on and off all day today too. My follicle scan is tomorrow and I'm freaked out that it won't show anything if I've already ovulated. Isn't CD11 to early to ovulate on clomid? Any experience or advice? Thanks in advance!