Over the years I've noticed that my cycle went from 29 days to 27 days. My follicular phase is 11 or 12 days and I get a positive OPK around CD11....EXCEPT when I take Fertilaid, FertileCM, and Ovaboost. Taking the supplements extends my Follicular phase and this month I got a positive OPK tonight....end of CD13 so ovulation should be tomorrow. From what I've read, if you have a short follicular phase the lining of the uterus may not be ready to sustain a pregnancy or allow for implantation. At first I was going to stop using the supplements because I thought they were throwing off my cycle but now I'm thinking maybe they're correcting my cycle. What are your thoughts and experiences?