It's not uncommon to have mixed syndromes. When you see a practitioner your issues are only part of the equation in forming a diagnosis - the tongue, pulse, perhaps abdominal diagnosis, palpatory diagnosis and just simply looking and listening to you help form the rest. Symptom wise there can be discrepancies, but we are looking for the "root" cause and those other tools help us to do that.
From what you have said, however, you should definitely get a thyroid panel done by your physician so that you know what you are working for. Thyroid conditions can be treated with acupuncture and/or herbal medicine, but you want to use the western tests to know exactly what you are working with. Plus having a medical test reveal a base line allows you to test the effectiveness of the treatments when you retest months later.
With regards to PE specifically, anxiety can cause that just as much (if not more) as yang deficiency can - so it can also be a symptom of yin deficiency which would fit with everything else.
I recommend you consult with your physician, get some basic tests done, get their opinion of what to do, and then take these to a practitioner of Chinese Medicine in your area and begin a round of treatments (assuming that is the route you prefer to take).