Really Important I Need People To Respond

So 5 months ago I took an overdose of 60+pills I only told the doctors I took about 20 or so but now every time I’m in pain example cramps or headache and my mam gives me a painkiller it scares me cause it reminds me of that time and right now I’m after taking one because of a pain I think it’s my appendix not sure but I have the same feeling as I had when I took the overdose, my head pounds I can feel blood flowing through my vains, my hands get weak and my stomock feels empty and a burn starts there, I feel sick and I come back to the same place in my mind when I was in hospital with an over dose. Now flyer taking the pain killer the pain near my appendix Is gone but all the other symtoms that I meantioned are still there. I went to my room and a few weeks ago I was sick with a bad fever so I had two packets of strong painkillers in my room left from that time, I took them straight away and put them in the medicine box in my parents room. I feel like a druggy or addict it feels like my body is begging for more pills but I don’t know what to do because I don’t want to take them and I’m just asking if anyone feels that way aswell ?