I had a cold since the beginning of january and can't get rid of the cough also when I cough my navel hurt. I get pressure in my navel when I sit down I take high blood pressure medicine called triamt/hctz also rite aid brand tussin and 800mg of ibuprofe

Persistent. Persistent cough with head congestion is usually caused by sinusitis. Recurrent coughing can strain abdominal muscles and could explain why your tummy hurts when you cough. This is the kind of problem that your family practitioner or internist should evaluate. I wouldn't rush off to a specialist just yet.....
Chronic. Chronic cough most common reasons are asthma, post nasal drip and gerd. You should see a pulmonologist for full evaluation.