Positive ovulation twice in month-non consecutive days

This month, I took an opk test and got a smiley face a few days ago (three days early when I have always been exactly on schedule) then, I felt ovulation pain later that day and then no smiley face at 3pm UNtIL last night when I decided to test again on my regular day! Smiley again!!! So this is the regular time I ovulate. 
know I already ovulated this month...can I ovulate twice in a month??? I had a chemical pregnancy last cycle, could it be messing with my ovulation? I did not think it was possible to ovulate twice in a month, what is the deal?