Nexplanon

[PumpkinPie14]

I had my nexplanon implant inserted in November 2013 - since then I've not stopped bleeding (there's been 2 days when there's been absolutely nothing).
I've also put a whole stone on - not sure this is a proven side effect, however I'm usually 8.5 stone have been for a long time (even after having my daughter) and no other aspect of my life has changed, so has to be the implant.
Also, I have been suffering with bad depression. This is hereditary so I know not completely down to the implant but do believe it's making me worse!
Anyone know what options I have? Or good contraceptives which wont play havoc with my hormones?!
Really dubious about having it out completely as we definitely don't want any surprise pregnancies, seems to happen on the pill for me, until we are completely ready. That part of the implant is fantastic, although may be due to celibacy because of the continuous bleeding!!
Would really appreciate any experiences or knowledge on this matter.
Thanks