"i got nexplanon on jan. 8 2015 and at first i thought it was great. didn&#039;t have a period the first month, next month bleed for two weeks no cramps or anything. when march came, my period came on and lasted longer than usual so i thought ok maybe its changing because the symptoms are irregular. well its may 8 and my period has been on non-stop! my body aches, muscles hurt everywhere, acne is a little more than before, cravings are crazy, but i have no weight gain or weight loss thank the lord! but nexplanon acts different in anyone who gets it. i do consider getting it though if you forget to take your pills and if your sexually active."