27 and not able to get pregnant

I am 27 and I have not been able to get pregnant for more than 8 months now.

I just don't get it, I always assumed it would be very easy at my age, I am generally healthy and don't get sick very often.

The only issues that I can see I have is:

1) BMI < 18

2) One cyst each on both ovaries that I have had from 4 months

3) Ovulating early, like day 10 on a 29 day cycle

Do you guys think any of these issues is responsible?