I'm miserable

I went to the doctor yesterday after having a sore throat and cough for six days and the doctor said it's "probably" strep. She didn't want to do a swab but I made her. Well it actually came back negative but she prescribed me antibiotics anyways. Today is day two of antibiotics and I still feel like complete crap. I'm coughing up even more phlegm and last night I couldn't sleep and coughed all night and I've done research and I'm pretty sure it's bronchitis and the doctor just mis diagnosed me. I don't know what to do. I'm suffering from headaches all day and can barely move. This is so horrible and I'm worried about the baby being okay.