Don't worry !! These things happen to us all. A couple of years ago, I spent the entire MONTH of November fighting off bronchitis. Everyone gets sick at some point. Take a few days off to let your body rest. I can assure you that you WILL NOT derail any of your efforts at good health or weight loss because you can't exercise.
Remember, when it comes to weight loss or even weight gain, what matters most is what we eat. Good nutrition is what takes the weight off and keeps it off. Exercise is what keeps our bodies fit and healthy.
As you start feeling better, you can slowly ease back into a routine. But for now, don't try to do too much or you will stay sick. Your body is still in a weak state. you need your rest.