"i&#039;m one of the lucky ones. i&#039;ve had the nexplanon for 3 months with no side effects. it&#039;s effective, and i love it. initially, right after injection my hair got a little oily and i felt very fatigued, but that went away after a few days (i&#039;m assuming that&#039;s because the hormones are most intense in the beginning). i had it inserted at the end of my period. my period has been very regular, coming in once a month. i did have a little spotting, each time about a week before my period for a few days. but it would stop, i&#039;d have a bit of a break, and then i would have a period for 2-3 days. no weight gain. my mood is fine. no increase in acne. however, i tend to react well to hormonal birth control (no side effects with the pill or plan b)."