I'm seeing things on my skin that i'm not sure are real or not.. am i going crazy!?

You should see a pro: Hard to know what you mean by "things on your skin". You should see a skin doc (dermatologist) if you have some spots that concern you. If these things feel as if they are crawling on your skin, you might be having an illusion. If you have been exposed to a neurotoxin (e.g., paint thinner, recreational drugs) you could be having faulty signals that your brain interprets as crawling things.