You have to ask yourself if you are prepared to continue going on and
off antibiotics indefinitely if this keeps flaring up, which is likely
if there isn't room for the tooth to erupt normally.  You are also using
the antibiotic for too short a period of time.  This done repeatedly can
promote the growth of resistant bacterial strains and decrease the
effectiveness of the antibiotic.
    Generally if you are in good health the infections are self-limiting,
and usually will resolve on their own in a week to ten days, antibiotics
or not.  Rinsing with warm salt water (1/2 tsp./ glass) several times a
day will encourage drainage.  If the infection gets worse you will be
the first to know.  If you start to get swelling under your tongue and
the floor of your mouth (unlikely but possible) you have a medical
emergency and must get to the emergency room immediately to be sure your
airway is not obstructed.  I say this to advise rather than to scare you.
    You are the only one who can decide when enough is enough.  If the
flareups stop the tooth may still pose a risk of decay, periodontal
disease to the tooth directly in front of it over the coming years.

Steve