I m a recovering addict who has been clean for a year and I relapsed on meth a few nights back, I injected it and hit a pipe once, after a few hours, I realized I d got cotton fever and shortness of breath, this Was three days ago, I ve slept twice already, all my cotton fever symptoms are gone except the shortness of breath, it feels like I ve got very low oxygen because when I stand up or even when sitting, I start to tingle and feel like I m one half breath from passing out, I ve been to the hospital and was completely honest with them, they said my oxygen levels were fine, etc, any ideas what s wrong? Me and panicking on top of the breathing is not helping so plz help, thxs