I have had bronchitus for three months and it won't go away! two rounds of antibiotics, what now?

Do you smoke?: If you smoke, you may have chronic bronchitis, the treatment for that would require smoking cessation. You might have asthma too. If you haven't been given, a short course of oral steroid and short acting bronchodilator inhaler might help. You may need more workup, like pulmonary function tests. You need to get a correct diagnosis. Talk to your doctor, and possibly get a pulmonologist referral.

Get X-ray: If you haven't had a chest x-ray, get one. It could be something else. It might be a sinus infection, needing different medicine, or maybe allergies which won't benefit from antibiotics. Please go back to your doctor.