What are some could ways to clean my ear, I just got it pierced but I lost the antiseptic.?

Alcohol wipes. Recently pierced ears can be cleaned with an alcohol wipe or rubbing alcohol on a cotton ball. Be sure to also wipe the post of the ear rings.
Clean ear piercing. Sterile saline sprays can work well. If the cartilage is pierced as well as skin, you might want to see a dermatologist or plastic surgeon to make sure there is no infection before you continue taking care of the wound.