Persistent Cough. Has been bad for a month now.

So I started smoking weed about a year ago. At the time I had not smoked cigarettes and was toking on average as a begginer 2 bowls a day with about half a gram each. I remember coughing but that would stop as soon as I got a drink. Now as of today it has been a year since I started and I didn't have this cough. Summer rolls around and me and my friends are buying about an ounce a week. Me and my friend had been hooked on cigs for about 6 months now and never had a issue. So we go to our favorite spot to toke up and so we did. I took a pretty big hit for me and instantly was dying of coughing. That was the last bowl anyways. I go home and sleep. The next morning I can not stop coughing. I take some DayQuil to help and it dose a little. I even tried robotussin thinking the cough suppressant would help. It was just getting worse. So I go to the doctor after about a week and they said it was allergies. I've never had allergies of any kind. So I take the meds for my allergies but nothing prevails. I dont always cough as much as the first week, but when I do cough, if I'm standing up it's worse and my whole body just explodes (not literally) I can't stop coughing to breathe so I end up sitting on the floor until it stops so I dont fall over. It's not like my cough is there when I smoke cigs but if I smoke weed I'm guaranteed to cough over and over and over for a few hours. Then its back to normal, but it isnt always when I smoke. I took a week break from everything and still no luck. I read about Chronic Bronchitis but I'm not quite sure if that is whas happening. If anyone had something similar and could help I would appreciate it