Hello and welcome! You are in a good place for support, information and understanding. Your symptoms do sound very suspicious for cushings. Are you still on the pill? An endo with a good understanding of cushings will not allow you to test for it until you've been off bcp for 4 to 6 weeks as the hormones can skew the results. So you'll have to get off the bcp before testing if you want accurate results.
Otherwise, BDen 13 had some good advice to offer above. It can be very tricky finding a competant cushings specialist, particularly if you are cyclical. If you are are florid, however, an 8AM serum cortisol could prove useful. Midnight saliva tests, midnight serum cortisol tests and 24 hour urinary free cortisol tests are what you need---and tons of them.
Please get copies of all results and read all you can here.
love,
melly