"i&#039;ll start with the pros. i&#039;ve had nexplanon for almost 2 years and in terms of effectiveness, it&#039;s amazing. it definitely does its job at preventing pregnancy. i had pretty light periods to begin with, so almost immediately after starting nexplanon, my period went away completely. i also don&#039;t ever have to worry about taking the pill like i had before, which is great. now for the cons. since i&#039;ve had nexplanon, i&#039;ve gained a lot of weight. i started at 125 and am now 150. which is pretty significant, i think. my anxiety has also been off the charts crazy since the first day i got it in. other than that, i&#039;d say the pros out weigh the cons but currently i&#039;m looking into a non-hormonal option just to see if this was truly causing my weight gain"