I've overdosed and I brought things back with me
How did your overdose affect you?
I'm feeling very weak both mentally and physically.
It's wrong to abuse drugs and you should get the proper help instead of continuing to do so. You might end up harming yourself even worse or dying due to an overdose.
I'm thinking about going to a doctor, but I worry that I'll do it again.
You're thinking right. Believe in yourself and go to a doctor and get some help. Join online forums to meet people who're going through the same.