I have been smoking weed and have had asthma since i was young...well the asthma part. But i stopped for the summer...and recently i have been coughing. it hurts when i breath deep. I also havent been eating alot ..and iv lost alot of weight. and im 16
I would strongly encourage you to see your doctor for an evaluation. Smoking, whether weed or tobacco, is not good for your airways, as I'm sure you know. Your airways are already irritable because you have asthma and inhaling a known irritant into them on a regular basis is not a healthy choice.
The coughing and pain on inhalation is a warning sign and a doctor should examine you to figure out what may be going on inside your airways. I'm also concerned about you losing weight. You don't say if your weight was in a healthy range when you started out or if you were overweight at the outset, but either way, losing a lot of weight in a short amount of time is not healthy for your body. So, again, a doctor should check you out to make sure nothing is going on inside that should be treated.
I know you may be afraid, but in most cases, what we fear is much worse than reality. So get the help you need as soon as possible, OK?
To your health,