Can u have bronchitis with no cough? My chest hurts, I have asthma, and I am having really bad headaches as well please help

Not likely. Bronchitis almost always has cough and mucus (phlegm) with it. Symptoms of asthma can overlap with pneumonia depending on whether you cough or wheeze. Headaches suggest something else such as influenza. It sounds like you should call your doctor and be seen if you don't start getting better fairly soon.
Unlikely. The most common symptom for bronchitis is cough. Asthma can also present with cough, but also with shortness of breath, chest tightness/pain and shortness of breath. It would be prudent to consider the chest pain as related to asthma, but if no improvement with asthma treatment, see doctor for additional evaluation.