Well my non-existent sex drive is here, at 7 months pregnant. I am so affected by hormones, it seems. With my first ds, we had sex a handful of times during pregnancy and even less during ds' first year. I found it very painful, and my NP said that I had the hormones of a menopausal woman. Very dry, my vagina didn't want to expand, etc. Wild yam cream helped, but it wasn't until ds let up a little on the nursing and I got my first period (at 15 months) did I get any libido.
Conversely, when I am ovulating, watch out!