"i got the implant 2.5 years ago. in the first 3 months, i had crazy emotions. i was violent and depressed. i gained 20lbs but i don&#039;t think it&#039;s the birth control fault. i drink a lot more soda then i use to. i do not get a period at all but do agree with needing lube for assistance! now that i&#039;m in my last 5 months of it, i&#039;ve been excperiencing the same mood swings from the beginning. its  uncontrollable and scary. that&#039;s the only downside i have."