Louis - Nice to hear from you. Please get my new book Deep Clearing which has a section Attuning for Health page 280 for working with physical ailments in conjunction with suppressed emotional energy. I don't want to have to repeat what I said there. However, in addition to that section, there are a few points: First, of course, you want to get professional medical advice and follow any prescribed suggestions along with the psychic-emotional healing that we do. Next is the concept of acceptance, which is subtle and easily misinterpreted. As I have tried to emphasize in the books, we do not force ourselves to accept outside conditions; what we focus on accepting is our inner experience - feelings and emotions - to the outside stimulus. Your throat constriction can be considered to be both an external and internal event. Therefore, do not stress yourself out on trying to accept the limitations that the throat conditions brings. Just maintain as much as possible a neutral passive attitude, and keep shifting your focus away from the limitations and on to the inner psychic-emotional experience in the chakra. As you have concluded, there is some kind of deficiency, constriction, or build-up of negativity in the throat chakra manifesting in the physical.
You have not given any indication that you have a processing practice. With a somewhat serious issue like this, you should be dedicated to two 30 minute alpha processing sessions per day. It would probably take a few months to clear up the condition. Don't get discouraged, think of it as this is your meditation practice for now. Follow the instructions in the aforementioned book section. You sit, you may visualize the condition to bring it up, then you focus pointedly on the throat chakra, feeling it, breathing into it, bringing in the healing Earth and Light energies, allowing your awareness of the chakra to keep expanding.
As you work, eventually any associated emotional issues such as you mention will come up if appropriate. There’s no way to tell in advance what feelings are trapped, and maybe even no emotions will come up at all but a healing can still occur, so you don't have to be set on discovering feelings. It usually doesn't help to hypothesize about what feelings may be suppressed. The idea is to clear the mind so as to allow suppressed material to spontaneously emerge in your meditation practice. It would not be out of the question to get with one of the EC Facilitators.
Good luck, and let us know if you are on Spotify. And why is your English so good?