I have recently started on Thyroid-S but wondering if I've made the right choice. And not feeling great. Heart rate has increased a little. I did feel good for a while and thought,'can this be IT?!!'....but no.....this seems to happen, you try something, you feel bad, then you feel better and then you go back to your usual sluggish self. Temp has plummeted. Has anyone else got thoughts on Thyroid-s?