I used implanon for 6 years in total from August 2002 until August 2008

What exactly is it?
A subdermal implant (an implant that goes under your skin) and releases progesterone (sp?) hormone. It sits under the skin on the inside of your upper non-dominant arm (ie if you are right handed it usually goes in your left upper arm)

What are the pro's & con's?
Pros - you don't have to remember to take a pill each day, you don't have to worry about when you can DTD as for most ppl they don't get a period, when inserted correctly is very effective against unwanted pg as you can't not take it (if that makes sense), stays in place for 3 years, you carry a card with you that has the info (ie insertion date, batch no, removal date, placement) on it so if you are in an accident or something the emergency staff don't try to remove it, most people don't get a period and if you do it is usually only very light

Cons - does hurt at first when it is implanted, you have a scar from the insert site and then the removal site if you get another after the 3 year period, it can be hard to track your cycles if you do TTC after removal (but I also had undiagnosed PCOS so that made it harder for me - but is the same as coming off the pill essentially), even though you may not get a period you may still go through the hormonal overdose each month - and it can be worse than when not on hormonal contraception, may put on weight and find it hard to lose weight

How much does it cost? (I'm on the single parent pention & have a discount I think for some medications?)
I can't remember how much it cost - I had the last one implanted in 2005 but I don't think it was overly expensive... taking a stab in the dark - bout $30 or so

Do you still get your period while you have it?
See notes above - sometimes yes, sometimes no - there was no pattern as to when I would get a period - I could go months between periods and then sometimes I would get a light period each month. I have PCOS (which was undiagnosed at the time) so it is hard to say how much was the implant and how much was the PCOS

Would you recommend it? Why (either way)
Yes and no - I loved it whilst I had it in but after it was out it had made life TTC very hard. The hormones had masked my PCOS to a certain extent as when I had gone to GPs whilst it was in they would just say "oh it is the implant, it will be fine once it comes out" and there is no real way of knowing how/if you will go "back to normal" once it is out... when I did have mine removed (cause we were going to TTC) it was a while before we worked out what was going on

It was handy not having periods and not having to remember to take a pill etc - for the first few days to a week or so after implantation they recommend you check the site to ensure it is in place - if at anytime during the 3 year period you can't feel it you should go to doctor as it may have moved. This did not happen to me but has happened to people I know of.

I will PM you some other details that are a bit TMI for the boards for my liking!