Depo & nexplanon

I was on the Depo after I had my son and got off of it after a year and then got on the nexplanon implant. I was on that from feb - sept. 2014 been TTC since Nov 2014 with no luck. Any advice on how to jump start conceiving? I would love to conceive #2. How long did it take you to conceive after the depo & nexplanon. Do I have a chance? My periods are regular and I cramp like crazy. I go through all the motions of PMSing and AF week....  Help please