Nat, if it's any comfort, I am doing the estrogen priming protocol because it produces more mature oocytes and increases good quality embryos. Research shows that these follicles grow slower. So there seems to be a positive correlation between slow and steady growing follicles with better quality embryos instead of growing them hard and fast. Here is one study:
On day 8, follicles were smaller in the E2 group compared with the control group. This was associated with more 16 mm follicles, mature oocytes and embryos in the E2 group
ivf.ca/forums/topic/13713-best-protocol-for-egg-quality/
With regards to estrogen levels, I don't have my results. Will have to ask my nurse. But I found this if it is any help:
To convert follicle size to estrogen levels:
There is no difference in E2 production between follicles measuring 14 mm and those that are smaller, nor between follicles measuring 17 mm and those which are larger (32). The authors devised an equation to determine expected serum E2 levels depending on number and size of follicles in both ovaries. Thus the serum E2 level on the day of hCG injection is:
E2 = 291 pg/ml + 180 (x) + 64 (y) + 18.7 (z)
where x, y and z represent follicles measuring >17 mm, 15 to 16 mm and