Hi, thank you for your response. Last night I became so ill I thought I was going to die. I had chills, ached all over . When I got up to take ibuprofen I felt very dizzy and then broke out in a sweat. Called for my husband who helped me into the bathroom, I was afraid I would pass out on to the tiled floor. Severe diarrhea. I decided to stop the Cefdinir. I had already taken the 3 doses of Azithromycin ( over 3 days) so not sure which one made me so sick. Maybe both. I messaged my Pulmo Dr. I believe the ER misdiagnosed me because I don't have steady coughing and the amount of blood was miniscule and no blood since then.I have been doing a watch and wait per my Dr.'s instructions, so we shall see what he says when I see him end of March. Take care and thank you.