Implanon-Birth Control

I've had the implant for about 5 months now the first month I had it, I still got pregnant. I went through the abortion process... 
But ever since I got the implant I always feel extremely bloated and I get headaches all the time. I also haven't had a period in 3 months. 
  
My body just doesn't feel right.
Should I get the implant removed ? 
How long will I bleed after its been removed?