Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. These are one time anxiety related experiences. Ignore it. Just think about what happened before you went to shower and what you were thinking about when you were in the shower? Was there any difference in temperature? Usually, when there is difference in temperature inside the bath and outside, our body reacts by adjusting body temperature. During winter, you must have noticed, our ears and nose become hot red. Such a change is normal and you could have miscued such a symptom. Recall. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.