There is no single test for Lupus. Lupus is diagnosed by symptoms, generally you need 4 of 11 symptoms for diagnosis and treatment, both of which are done by a rheumotologist.
Check out the link below, Diagnosing Lupus, and if you are still concerned that Lupus might be a problem, visit a rheumatologist for an evaluation.
It sounds like your main concern is a rash/flushing associated with your menses. Have you seen a dermatologist or consulted with your gynecologist? Those might be better places to start questioning rather than jumping to something as serious as Lupus can be.
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2002DIAGNOSING LUPUS & HW's LUPUS 101
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Post Edited (Lynnwood) : 6/14/2015 4:31:13 PM (GMT-6)