My daughter is 20 and started to feel sick last Thursday. She had severe body aches and nausea, with a headache. Since then, she has developed very swollen, puffy eyes, and today has a sore throat. She went to urgent care yesterday where they did a flu test that was negative. They didn t test her for mononucleosis because they said her throat wasn t red or sore (she had her tonsils removed in 2003). Any idea why her eyes are swollen but not itchy or red? She s been taking zyrtec and benadryl, but they stay quite swollen.