I remember my first weird solvent spill, it was triethylamine. I didn't know what to do either, so I asked someone, and he sent me to the MSDS. It's a good way to learn about all the hazards in the lab, ad your lab should have it handy for you to browse, before you start handling reagents, after you've been exposed, or even to provide to emergency response personnel, they don't necessarily know everything.
In your case, I made s quick online check, of an MSDS for dichloromethane, and got an LD50, dermal, 810 mg. Usually these are expressed as a dosage per kg. When you multiply by your weight, you can see, it takes quite a lot to hurt you.