Hi sjays, I started taking provera 5mg daily just over a month ago (also on everol 75mcg). I've had 4 break though bleeds lasting approx 4 days (light) with migraine & cramps day prior to them starting within the last 6 weeks. I'm not unduly worried as I know a new HRT regime can result in short term issues, will keep an eye on it though. Generally I feel much better in myself, good energy levels (some days better than others but def improvement), sleep much better which is probably contributing to feel good generally. 
Sjay it all depends how debilitatig your symptoms are & how they are impacting on your life, it may be that you need to give the provera longer (if you are able to put up with it) if not back to GP/nurse or whoever you see that is best placed to advise you in relation to where to go from here. I hope you find something that works for you as it is an awful time when you feel so unwell, you have high hopes and then they appear dashed, hopefully not for long though!! x