I got my nexplanon implanted in May. A few months ago, I had a small lump right on top of the bar, assuming it was a mosquito bite. Then a month later again I received the same lump also believing it was another mosquito bite. But now, another month later I've gotten the same bump and am now convinced it isn't a bite. Could I be allergic to the implant?? It does feel somewhat irritating. Thanks, AAAAA.