Advice on deliberate poisoning, persistent symptoms, and substance detection.

Hello everyone,

I am a 42-year-old man experiencing persistent symptoms, including joint pain, skin rashes, insomnia, and chronic fatigue. Despite completely avoiding food from my home, these symptoms persist, and new ones occasionally appear, making the situation even more difficult to understand.

Tests have detected the presence of an SSRI antidepressant and an antimetabolite (anticancer drug), but other substances may also be involved. The problem is that I do not experience any immediate effects after exposure, making it difficult to identify the method or timing of administration.

I am seeking advice on the following points:

What methods could be used to secretly administer a substance like an SSRI or an antimetabolite?Is there a reliable way to detect the presence of suspicious substances before ingestion?

Thank you in advance for your help and recommendations.