So my gf and I have been shooting heroine for several months together. Lately she has been getting sick within an hour of shooting up. Straight up withdrawal symptoms. This is how it goes. She shoots up and has an instant rush, then minutes later she's not high anymore, then with in the hour she goes into withdrawal. She throws up severely, she sweats, she gets goosebumps, and she gets restless legs very badl. But I nod out and stay high off the same bags. Has anyone heard of this or can someone explain why this is happening?