3 staph infections in 10 months

last may: 1st staph infection ever, behind l. upper arm, sept: 2nd inside l. nostril, december/jan 2007: one on back of l. side of neck, now: think i have #4 growing inside r. nostril/nasal septum piercing(have had piercing for 15 yrs. and never a single problem). All Extremely Painful! #1 was lg. boil had to be lanced, upper arm doubled with swelling; #2 was like a small zit in nostril had to be lanced and turned my nose red and huge, #3 erupted 1 day into antibiotic treatment - several to fully drain and 1.5 wks to really settle down completely. Prescribed antibiotics for first 3. Once lanced - much discharge(1&3). Never before in my life and now I'm 33?! What gives? tired of antibiotics. Limited Naturopathic care access here. Poor/incomplete answers from clinic. Been trying tea tree oil, immune boosters, eating water chestnuts, Normally quite healthy, cyclist, musician, low meat intake(never beef), work out, mentally very active, haven't even had a cold in quite some time, sore throat nearly a year ago at the most. emotionally vexed by infections. Want to solve the root problem. Can't afford repeat clinic costs, but am willing to go whatever distance to solve this.