Nexplanon and weight

So I have recently gotten the arm implant but I read something where it is unknown if the implant is less effective for women with heavier BMI. My weight currently fluctuates between 182 and 177. I haven’t been super pursuing trying to lose weight but I’m very active. I just don’t eat the best all the time. Is my weight going to make my arm implant fail. My doctor didn’t say anything to me when I got it but I also never asked