Implanon is quite effective against unwanted pregnancy and its failure rate near about 0.1%. Here, you need to undergo one TVS scan to exclude possible miscarriage.
Other reasons are side effect of implanon, hormonal imbalance, unnoticed uterine polyp/ fibroid, adenomyosis
, DUB, pelvic infection
Following initial test, you need to consult with gynecologist for next investigation and suggestive medication. You may need to use other contraceptive
method if implanon causes that.
Maintain genital hygiene. Take healthy diet with iron supplements
. Be well.