I think it is simple , after the use of most AAS ( specially heavy androgen like masteron ) , you WILL HAVE LOW test levels.
the idea is to use HCG and/or clomid to not allow your test levels to drop that much .
You do know that gyno develops when you have low test levels right ?
It doesn't need to be high estrogen , or high prolactin or high progesterone levels , LOW TEST LEVELS = INCREASED CHANCES OF GYNO .
simple as that ,
And I am not sure but I don't think that aromasin will help , since you are probably with your estrogen levels in check , or maybe the low test levels made the estrogen higher , not sure .
I think the best choice it to do a blood test . If it is low test levels , hit the HCG/and or clomid WITH aromasin or any other anti-e .
Victor