I Have A Cold And Sore Throat, But Was Feeling

I have a cold and sore throat, but was feeling better this morning. Then later in the day I suddenly felt dizzy and all sweaty and turned white (according to people around me). One of the people nearby was a nurse and she had me lay down and put my legs up. She said my pulse was very low. after about 10 minutes I was okay. Should I see a doctor for this. I am 64; normal blood pressure; no heart disease.