Hi Ladies, I have a question for you all..

Could a common cold be a sign of pregnancy? It’s Spring almost Summer here in Florida & it is very RARE for me to catch a cold around this time of the year. It started Friday night & worsened along the way up until today including some mild lightheaded & nausea. Could this mean I possibly conceived? Or do I just have a cold? When would I test? (This is the week Aunt Flo is suppose to show & I have no symptoms)