2 ovulation in one month. Confused :(

My hubby and I have been trying for almost 2 yrs. the month of nov. And dec. my ovulation test (clear blue) showed posturing ovulation around the 17 and 18th then again around the 27th. The 17th would be about 2 weeks into my cycle. Just wondering if my body is gearing up to ovulate but then not till later. Any ideas or anyone hav this happen??