In response to "?" : Where are you learning your facts.... I believe you mean INDICA, not Indigo. And the "Bud Blues" you speak of, are the most common withdraw symptoms.
Here you can find some basic information : http://www.thcdigest.com/indica-vs-sativa/
I would advise educating yourself about the physical, mental, medical, and spiritual effects/benefits before you chose to try a drug and before you inform someone of something incorrect or misleading.
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NOW - TO ANSWER YOUR QUESTION :
Being a chronic smoker effects an individual mentally and physically. Having taken a month long break, your body was probably releasing all of the toxins that had been built up for the duration of your use. Your lungs had not inhaled smoke for that duration of time, so it was shocking to them since they were detoxing. The shock targets your lungs, heart, brain, and body.
If you don't like the physical effects from "smoking", simply make a choice about smoking it or not. If you have a medical reason or are actually in physical need of cannabis - there are other products that contain THC that you can try which would be less harmful on your lungs. Products such as ; tinctures, edibles, pills, and more. (Just search and do a little research)
If your are smoking for enjoyment / socializing, maybe try some of the other forms listed.... or reduce the amount you inhale so it won't be as harsh on your lungs. (Vaporizing might be an option if you prefer to SMOKE. But just remember, it is your body and you are damaging your lungs. So with all psychoactive drugs - take/do with moderation)
From what you expressed, your highs are no longer enjoyable - that is your body and mind telling you, you probably don't need it.
Depending on where you are located and if you are in fact a medical user then maybe seek other options in your community.
~ Good luck!