Good Day Sir, My Name Is Sarah.I Have Been Married

Good day sir, my name is sarah.I have been married for sometime now and have not been able to get pregnant few months ago PCOS was discovered. I was told to do hsg test and hormonal test, that when my menstruation comes on day 3 I should do the first hormonal test , day 10 hsg test and day 21 another horMonal test but the problem am having now is that the menstruation hasn't come till now, my question now is that can I take provera to force menstruation then go and take the test? Also will it alter the result?