you have got your periods 15 days early this time..
you were on the course of antibiotics for the tooth abscess
is not known to cause menstrual irregularities..
the stress you were going through, due to tooth abscess can cause hormonal
irregularities..can cause menstrual irregularities..
so relax, and do yoga, meditation
if it recurs, then see your gynaecologist for the investigation and management..