I'm a singer and i have been experiencing tightness and a bloody taste in my throat whenever i talk or sing. it hurts my throat to move my head, too.

See laryngologist: As an 18 year old singer, the best advice is to see a laryngologist who has experience with professional singers. The symptoms you have could be a problem with your technique. Neck pain often means use of extra-laryngeal muscles and that may indicate faulty vocal technique. All your symptoms indicate faulty vocal technique and that requires cooperation between a voice teacher and a laryngologist.