Hi sis! Normal yan with implants, marami sa amin ang nakakaranas ng irregular bleeding o spotting, especially sa first months pa lang after giving birth and insertion pa lang, so totally possible na yan ang nangyayari sa iyo! But 5 months na ng ganyan, I'd really suggest checking with your OB para ma-rule out kung walang iba pang nangyayari, kasi bawat katawan naman natin different, at mas better kung ma-assess sila directly. Maraming kaibigan ko natry na iba pang positioning or adjustment, or nag-switch to another family planning method, so huwag mag-alala, may solutions yan!