Ive been looking into the implanon also.
It tells you how they put it in what kind of symptoms you could get from it. Depending on if you have insurance or not, from the reasearch ive done, with insurance it could cost about 100. At the planned parenthood by my house, its 400 with out insurance. If you go to planned parenthood though, you will fill out papers, and one of the things you feel out is one saying if you have a job and how much you make, if you dont make to much they can give you a discount.
If you want a pill, the pill im on curently is called Ortho Micronor, its a mini pill, and it has stoped my period all togeither, i dont have cramps or anything. Altho it might not have the same affect on you, every one ive talked to on it has had the same experiance. And on the weight gain ive been on it since aug, and ive gained about 3 pounds, so not much, but agian it might affect you diffrently.
You should talk about the diffrent types of birthcontrol there is with your dr and find out what kind you would like. There are many diff types out there, like the pill, the ring, and IUd, the patch, the implant. Thats all i can think of off the top of my head lol. If you end up geting the Implanon, you should let me know! im going to get it after i save up enough money lol.
Hope i helped alittle, Have a good day!