I don’t know if it is or not. By its very nature, it’s possible that neither do you. That’s the issue with delusions, they are indistinguishable from reality.
You should suffer no harm by seeking a professional opinion on the matter.
No, I'm not delusional or schizophrenic, but I'll agree asking serious advice on this topic on Hacker News is a stupid idea. Anyways, I'm serious about the OP and have even been bothered by Secret agencies before IRL.
Several things can cause paranoid delusions that aren’t schizophrenia/schizoaffective disorder, including even sufficiently sustained sleep deprivation.
Let’s not try to diagnose anyone here and just get them pointed in the right direction for answers.