birth control
"I have lots of friends who love Nexplanon and have done very well with it. Unfortunately I cannot relate. I got it put in 2 months ago and have thrown up mutiple times a day, every single day since it was put in. After the first month I finally figured out the system.. I get sick anytime my stomach is empty. So even if I'm not hungry yet but I haven't eaten anything in a couple hours, I'll throw up. And there's no nausea or really any warning.. I'll gag out of nowhere and I have about 30 seconds to get to a toilet because it comes right after the first gag. In order to prevent myself from puking all the time I've had to implement a strict eating schedule. I have to snack every 2 hours. Not surprisingly, I've gained weight because  of this."