Archive for the ‘Follicular Phase’ Category

A question about the follicular phase, and night lighting

Tuesday, February 17th, 2009

Please see a few questions, and my answers below…


Dear Ms. Singer,

Your book ‘Garden of Fertility’ is superb but I just can’t understand one part of it no matter how hard I try. You have stated that low progesterone levels can be indicated by a number of factors,including when the transitioon from the follicular phase to
the luteal phase takes more than 3 days. You have also used examples to illustrate this but I cannot understand these examples. How does one work out this transition and how many days it takes. I normally seperate the follicular phase from the luteal by looking at the day when temperatures shot above coverline. So which is the transitional period?

For example on P113 on Barbara’s chart, you say she took 6 days (Days 18-23) to shift from the follicular phase to the luteal phase. How do you get 6 days?

I have shown this book to my friends as well and none of us can work it out. Not sure if I missed something in the book or if this perhaps needs further explanation.

Thanks so much for your help.


Thank you for your question.

I first want to clarify that we’re talking about Chart 6.6 on page 114.

I think you are right. I’m confused here. I think what I was trying to show is that Day 18 was the last day before Barbara’s
temperatures started to rise. Days 20, 21, 22 and 23, her temperatures continued to rise. She didn’t have a crisp shift. I might say she was “stairstepping” between the follicular and luteal phases. The “stairstepping” quality can indicate low progesterone levels. I hope this clarifies.


Dear Ms. Singer,

Thanks for clarifying. Yes, it is Figure 6.6 I was referring to.

I see the pattern that you have explained so it makes sense now.

I have read a few chapters of your book and it’s been quite enlightening…especially the lunaception chapter as I did not come across that in most of the articles I have read. After reading that last night, I now plan to sleep blindfolded for a few nights until my husband and I find a more practical way to block out the bright street lights that illuminate our bedroom every night.

Thanks once again for getting back to me.

I’m glad you’re enjoying the book. Before I bought light blocking shades, I used unfolded cardboard boxes which actually worked quite well.

Best of luck,

Katie Singer