PIERCING HEALING TIMES

Healing times vary person to person. Some people faster than others.
I've personally had a helix piercing heal up in a month and another took 4 months.
Here is a conservative estimate of how long it takes for the following piercings to heal. 

Ear 
Lobes 3-6 months  
Industrial: 4-8 months
Helix: 3-6 months
Forward Helix: 3-6 months
Rook: 3-6 months
Conch: 6-9 months
Daith: 6-9 months
Tragus: 4-6 months
Anti-Tragus: 6+ months
Snug: 6+ months

Facial
Bridge: 3-6 months
Eyebrow: 3-6 months
Nostril: 3-6 months
Lip (lower): 3-6 months
Lip (upper): 3-6 months
Septum: 6-8 weeks

Torso
Navel:6-12 months
Nipples (male): 6-12 months
Nipples (female): 6-12 months

Oral
Tongue: 6-8 weeks
Frenulum: 6-8 weeks
Web: 6-8 weeks