Dr Natalie Crawford

That's how it works.

Works very, very well.

Catherine, within a week, her uterus ejected it.

So she cramped so much that it pushed it through.

And so that wasn't an option for her.

She wasn't willing to go through that again.

So then at that point, she had to go through the hormonal options for that.

And she decided to have the implant, so it's progesterone only, implanted in her arm.

Quickly, we realized she needed some estrogen.

So she supplements estrogen on top of that.

And that had estradiol in it so that your body could still have some estradiol.

300 times more powerful than regular estradiol, which is why it's so effective.

You know, why we do it in a microdose versus estradiol is dosed in milligrams and ethanol estradiol is dosed in micrograms because it is that much more potent.

So very, very different.

Now, in the UK and other places in Europe, there is a new form of contraception that has esterotrol, which is the fetal estrogen.

So we have four natural estrogens in the body.

The ovary produces estradiol.

That's the one we all know.

It's really the biggest bang for our buck.

The placenta produces something called estriol.