clomid and provera? advise!

💞SuE💞 • 39/ TTC#1 4 rounds of clomid at 25mg. 1 round of ivf/fet failed dec16. 2nd round fresh failed 14feb17. fet in april17
any advise girl! I'm new to all this and am about to take my first cycle of clomid but since I have pcos I missed my period ( again) it's been a year of missed cycles which only started to happen 11 months ago after a miscarriage. I was given something similar to provera to force a period on so I could get my day 2 blood test. Now I've been given clomid, it seems this period won't come. it's cycle day 50 and I'm def not pregnant, so I'll have to start provera again in order to take clomid but will I have to do this every month? mad it was when things were normal my cycled were 36 days but to actually wait and see if I missed a period due to pregnancy or not, won't that take forever before deciding to take provera again to take a second lot of clomid? hope this makes sense.  Has anyone who suffer from missed periods or pcos had to take provera/projesterone pills every cycle to start clomid and fallen pregnant? it all feels so mechanical and forced, and I'm scared of another misscariage. getting old.... 38 on Valentine's Day next month and would really like to be on my clomid journey by then!!!