Interesting. PCOS causes women to be overweight, so that could be part of the weight gain. I have a friend with PCOS who exercises religiously and tries to stay fairly low-carb, and she says she struggles to keep her weight down.
I'm also curious about your W's diagnosis, because I dealt with infertility myself. Who diagnosed her? Her ob/gyn or a fertility specialist? Is she being treated?
How old is she? If she's 40-ish then she is running out of time and could be feeling desperate to have a baby. So if you haven't been having sex frequently, then she could be very resentful toward you as Mojo said. A woman's fertility starts dropping off in her 30s.
