Libido has proven to be a somewhat squirrely thing for us to get a handle on (my, that was a bizarre sentence. :p) The problem is, I think that for many of us women our libido is wrapped up in a lot of different things, stress, sleep, how attractive we feel, how our husband is treating us that month - that may have zippo to do with testosterone levels.
With women's libido, it may be that the mental aspect is more important than the levels of any hormone circulating in our body. Not that T levels can't increase libido, but that we may not want to ACT on that libido or even notice it's there due to mental factors. I've had many times where my husband was feeling frisky and I wanted to rip his head off for it but then once we got started I got really into it after all and was like, "why did I think I didn't want to do this??" ;) So I'm not sure we can necessarily extrapolate libido to testosterone levels.
That having been said though, you may have read about a phenomenon where more boys are conceived when soldiers are home on leave or right after they return from a war, and it's been proven in at least one study that women have peaks of libido when they have been separated from their man and then reunited (I cannot for the life of me rem. where I read that but I read a big study analyzing women's libido, prior to when I was researching swaying - it's out there somewhere haha) so I do def. entertain the possibility that peaks in libido, even sudden ones, can DEF. sway. More female orgasms? More cervical fluids??? HIgher sperm numbers?? More semen raising pH??? Prob. all of the above, and then some things we don't even know about yet.
When I conceived my DS 1, we hadn't been together for very long and we were both really "pent up". When I conceived DS 2, my husband and I were having kind of a nice period in our marriage and DTD more than normal and I was def. enjoying it (that was the best time in our whole marriage). DS 3, I didn't have any little kids at that point (first two were older) and we were able to DTD and have a little bit of fun with it and I would say my libido was somewhat higher than normal. So at least with the first 3, I prob. did have higher libido those months. Now with DS 4 my libido was in the TOILET! But overall, true for me!!

