By Zahna Eklund Feeling the cold is perfectly normal, but there are some instances where it could be a sign you need to see a doctor. With temperatures in the UK plummeting to below 0 this week and some parts of the country being hit with snow, it’s no wonder many of us are struggling to stay warm even with our cosiest clothes on. It’s normal to be feeling the chill when the weather is this miserable, but sometimes shivering and feeling cold can be a sign of something more serious, and it’s important to know what to look for in those circumstances. As humans are all unique, we all have slightl…