ovulating twice in a month! is this possible?

Renae
Ok so a few months back when hubby and I were TTC I took a digital clear blue ovulation test on CD13 came back positive. I wanted to test the theory if you can use a ovulation test as a pregnancy test. So I tested 2 days before AF was due to arrive. And came back positive also!!! So I thought ok I must be pregnant. AF arrived 2 days later when it was supposed to. I'm still in shock to think that I ovulated twice that month. This was 10 days apart from first test to second test