Hello I Was Just Wonder What Would Cause Me To

Hello I was just wonder what would cause me to spit up blood after injecting crystal meth?? No my mouth wasn't bleeding nbefore Iinjected the meth?? And also minutes before starting my period I injected crystal meth a couple hours later I started my. And it burned really bad almost at the point where I can walk and I could hardly sit down it felt like a urinary tract infection what would be the cause of that