Ovulating two times a month?

Destinee
I'm really not sure what to even think at this point. So I will ask, is it possible to ovulate more than once a month?? I have been tracking my CM this month and I ovulated like clock work on cycle day 16 which would have been September 4th, my period should be due September 24th, which would be cycle day 36, my cycle is always between 31-45 days, I woke up this morning with clear egg white CM again. It's deff the same as it is when I ovulate, is this really possible to ovulate twice?? Does that explain why my cycle is so long? If this is true why am I still having such a hard time getting pregnant?? Has anyone else experienced this??