Who would have thought of buying sperm?
There is sperm literally everywhere -- hotel rooms are covered with it! When I have a lover, we are always cleaning it up -- yuck. The world is crawling with sperm, why would anyone have to pay for it?!
It seems that to be a sperm donor, men have to have spectacular sperm counts! The not-so-nice lady I put my order in with told me the average "man walking down the street" has 8mil count/cc, but donors must have 20mil count/cc after 50%-80% are killed by the freeze-thaw process.
So, I have just invested over 3 paychecks in 6 chances at being a mom. I ended up buying 3 vials each of my top 2 donors. I call them A and B. Now I have a fun study design type of problem to solve, reminding me of my graduate coursework.
The first 3 cycles will be at home with an age-specific success rate of 7.5% per cycle; then I will move to IUI in the office with the last 3 vials at a 19.2% chance. Using the Negative Binomial distribution, the chances of a success in the at-home cycles is 20.9% (cdf of Geometric at x=3); and 47.2% in the 3 in-clinic cycles. There is a 42% chance of both these approaches failing.
So, here's to my 58% over the first 6 months of 2012!! I'd give myself a few points since the age range is 35-39, and I'm in the middle at 37.