It seems (from the book and several websites) that initially, at low conc. oestrogen inhibits FSH and LH. As the follicle matures and oestrogen levels rise FSH and LH are stimulated.

My questions are
1) If low levels of oestrogen inhibit FSH (and LH) how can the follicles mature (they are matured by FSH)

2) Why do we say oestrogen inhibits FSH and stimulates LH if it inhibits and stimulates BOTH pituitary hormones?

Thanks