I am a 17 year old female and have been feeling sick for over a month now. it started with what I thought was a regular cold. The sickness i’ve been feeling is really bad sinus pressure throughout my head, chest pain from coughing phlegm up, weakness, a feeling as if everything is fake (I feel sometimes extremely out of it, as if I can’t process what’s going on around me, it doesn’t feel like real life), I get shakes, constipation from time to time.