I’m so scared of suffering

if I’m alive until I’m 70 for example. I have to suffer for another 50 years that just sounds so scary and I’m terrified of being in pain. I have tried so many medication but nothing seems to be working. I also do the basic such as going to work. I paint, play my guitar, dance, walk but nothing seems to be helping me. I’m so scared because I know I will always feel like this. In fact I remember that I’ve always been in pain since the age of three.