This Issue Keeps Happening To Me, I Occasionally Smoke Crystal

This issue keeps happening to me, I occasionally smoke crystal meth approximately once every 6-8 weeks.. However when I do, i find usually for the next 24 or so hours I'm persistently blowing meth smoke.... Because of this it was continue to create clouds of smoke indoors as it's every time I exhale!! Is this due to smoking incorrectly or should I see my gp? Thanks