I have other medical problems, should I be worried?

This depends on what medical problems you have exactly. Many people have other health problems such as diabetes of any type, asthma and high blood pressure. The advice at present is that you should be social distancing. Because you have other health problems you should be extra cautious but it is not required that you shield yourself and isolate for 12 weeks unless you fall into the highest risk group.

I have/don’t have other medical problems, but I am over 70 years old. What should I do?

The advice remains the same. You should be extra vigilant and social distance. You are not required to isolate for 12 weeks unless you have been told to do so.