Just wanted to give you a honey, try not to worry too much. A friend of mine did have a thyroid issue, but from what she has told me the main symptom she had was weight gain. I think hot flushes are also common along with breathlessness.

I however did have an implanon a few years back and had pretty much all of the symptoms you've listed and I have had a couple of friends who had similar problems with it. In my case it took a long time for the symptoms to come on and then they gradually got worse and worse, so after 18 or so months I had it taken out.

GL x