I think about getting tested

Hi, I'm 21 and it is not my first post here. When I became 18 I had father-son conversation. He told me that maybe I should get tested, but it is up to me. Since that moment it haunts me. Whenever I see my mom... I don't blame them for having children. They didn't know. Should I get tested? What if I get positive? My life is going to fall apart? I'm already in a dark place since christmas. What do you guys think? Please be brutally honest

Edit: Do you guys know anything about medicine? Are there any chances the cure od treatment might be invented?