1) You've mentioned a lot in this service about a woman's menstrual cycle, and the risks involved with unprotected sex. Details that you have mentioned include, for example, the high risk of pregnancy (i.e., as a result of unprotected sex or failed contraception) during the "fertile period" of a woman's cycle. What I would like to know is: what (typically) are the various stages in the cycle (e.g., ovulation followed by menstruation, etc.), when do they typically occur in the cycle, and, most importantly, WHEN are the (typical, of course) fertile and infertile (minimum chance of pregnancy) parts of the cycle?

2) When calculating the length of your menstrual cycle, what is considered to be the actual first day of your cycle? Is it the first day there is "red" bleeding, or does it also include the first day or two of brown discharge?

What is the deal with menstrual cups? How is it different than a diaphragm? Is it safe? Is it safe for virgins to use? Is insertion much more difficult than tampons? How do you take it out? What are the benefits? I'd like an educated opinion.

1) I have seen multiple advertisements for egg donation in my school's newspaper. I could sell my eggs for $25,000 or more! That's a year of tuition! There's got to be a catch. When I do some research to find out the procedure and the risks, I only seem to find oocyte donation "businesses" — not the most straight forward sources on the subject. Alice, I trust you! Can you tell me... what have I got to lose?

2) I see lots of ads in the paper here at my school about egg donors wanted. I think that I would like to donate an egg, but I can't find any information on the net about donating — only about receiving a donation. Can you tell me what the process is like, how long it takes, and whether there are side effects or permanent long-term effects? Or point me towards some other resource.

I have recently been advised that my on-going migraines might be caused and/or increased by the use of contraceptives containing estrogen. To that end, I have been recommended to switch to a progesterone-only form of birth control. Which, in turn, basically means I get to choose between Implanon and Mirena (I really can't stand needles, so Depo is out for me!). I am only 23 years old, and have not yet started a family. I do want to have children someday, and am very enticed by the idea of Mirena lasting to the point when I might want to begin trying to get pregnant. However, all of the advertisements for Mirena state that ideal candidates have already had children.

Is Mirena still safe for use in women who have not yet given birth? If so are there any additional side effects to consider in this instance?

I've heard so many horror stories of women who wait until their mid-thirties or later to have children, then find out that they are infertile. I'm 25 years old now and nowhere near getting married or having babies, yet I don't want this to happen to me when I'm ready. What can I do now to protect my fertility and make sure I am able to conceive when the time is right? It's causing me a lot of anxiety!!

I have had a notebook (laptop) computer for three years now. I never use it on a desk, but rather surf the web with it sitting on my lap. Since I am only 18 years old, I worry that someday I may try to make a baby and fail. Could an electronic device such as this sitting above my testicles every day lead to infertility?