I went off the injection for around 3-4 months, for my period. then went back on it in august, my next appointment is due this month in oct, however im spotting a little, should i be concerned ?

Hormonal injections?: Many women have occasional variation of their mucus discharge, some spotting between periods, a heavier period, a lighter period, a longer or shorter period, or even a missed period. Having one or two of these symptoms doesn’t necessarily mean there is a medical problem, but a visit to one’s primary care or Ob-Gyn doctor is a good idea if symptoms are persistent, recurring, or worrisome.