Trying to conceive

Courtney
Me and my boyfriend has been trying to have s baby for some time now. I've been on a BC for 2 years all together. I was 16 when I got the implant in my arm for a year and a half and I was off for a year and got on the pill for 6 months then got off and got back on for another 6 months. Now, I've been off for 5 months. How long does it normally take for your body to get back normal or when do you know your fertile?? Help!