Wierd stuff from 2 months ago (warning)

One day i was in an old house and my dad was drunk my bed had moth maggots in it so i went downstairs my mom said i can sleep there on the couch while my mom and dad were on the bed . My dad asked my mom if she would let him have sex with her and now this is stuck in my head out of nowhere and i hate it and it goes into my head whenever i want to do something 'dirty' and i have to watch stuff to distract myself but if I had a gf I fear that will go into my head as well as just normally when i do stuff i really want this out of my head. I cant afford therapy im looking for a job and i dont know what to do with this stuff and im sure as *** not talking about it to anyone irl