Can you explain oestrogen surge?
x
A rise in the concentration of oestrogen in your body. Both oestrogen and progesterone have roles in pregnancy.
"In the ovary, the corpus luteum secretes oestrogens and progesterone, which are steroid hormones responsible for the
thickening of the endometrium and its development and maintenance, respectively. These hormones also inhibit Luteinizing hormone and Follicle-stimulating hormone.
I've read oestrogen surges are responsible for the EWCM and can explain temperature dips too.
In seals (don't laugh) oestrogen surges come after implantation. Famous study in the 1970's https://www.reproduction-online.org/cgi/reprint/37/2/425.pdf Don't know if it is the same in humans.
You will also get oestrogen (and progesterone) surges after ovulation to thicken the womb lining. This might expain a little ewcm but not lots.
Here is some info I found from: https://women.webmd.com/normal-testosterone-and-estrogen-levels-in-women
What is estrogen?
Estrogen is an entire class of related hormones. They include estriol, estradiol, and estrone.
Estriol is made from the placenta. Its produced during pregnancy.
Estradiol is the primary sex hormone of childbearing women. It is formed from developing ovarian follicles. Estradiol is responsible for female characteristics and sexual functioning. Also, estradiol is important to womens bone health. Estradiol contributes to most gynecologic problems such as endometriosis and fibroids and even female cancers.
Estrone is widespread throughout the body. It is the only one of the estrogens thats present in any amount in women after menopause.
Why do estrogen levels fall?
There are many reasons why estrogen levels fall, including:
hypogonadism
hypopituitarism
pregnancy failure (estriol)
perimenopause and menopause (estradiol)
polycystic ovarian syndrome (PCOS)
anorexia nervosa (eating disorder)
extreme exercise or training
Drugs that may decrease levels of estrogen include clomiphene. In addition, women experience low levels of estrogen immediately after childbirth and also during breastfeeding.