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I hope a sister will have some useful comments, but is there some way you can call the doc's office to let her know these unresolved questions, since she is sure to understand your situation better than any of us are likely to? Sympathizing with your concern, but I don't want to speculate about anything when I don't know all the details, and am not qualified to do more than guess. Did she list possible causes, or is she holding off on that until additional tests have been run? If you ask, she might be willing to (even ethically obligated to) share at least an overview of her current thinking when it comes to the differential Dx process and what the possibilities are. Docs do still tend to avoid discussing this unless you ask specific questions, and then they usually will feel obligated to explain more about why they are moving in their current direction.
If you need to know the possibilities, just ask a question like, "What are the possible causes for this drop in E levels in my case?"
If she doesn't have several possible causes in mind, or is unwilling or overly resistant to discussing them, it might be time for a new doctor. But often, docs will not share that info unless the patient explicitly asks, given that it is all probabilities, and they are often concerned that patients may tend to leap from "It might be X" to "I bet I have X; no, I'm sure I have X."
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My prolactin spiked early on, my gyno didn't seem surprised and said not to worry about it unless it was still high when my next bloods were done.. 3 months later it was fine.
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