Can Lupus affect my menstrual cycle?

Many young women with lupus find that their periods are altered. There may be extra (inter-menstrual) bleeding or, conversely, an absence of periods for several months. This is a common feature of lupus and gives rise to a lot of anxiety. Fortunately, in the majority of women, the periods return to normal once the disease comes under control. As with many illnesses, it appears that general disease activity seems to alter hormone balance.

Lupus, hormonal activity and menstrual cycle...

I have noticed a distinct pattern emerge, notably my symptoms of lethargy, joint pain and cognitive disturbance become increasingly severe and non-responsive to the drugs from day 14 of my menstrual cycle and, with more severity notable from day 21 onwards. At this point I find it hard to stay awake during the day-time for any length of time or move with any freedom. Are the symptoms related to hormonal activity...?